C Lab Manual-1

7/28/2019 C Lab Manual-1

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UNIVERSAL ENGINEERING

COLLEGE

Vallivattom(P.O), Thrissur-680123.

EN109(P)Computer Programming in C

Lab Manual


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EX. No. : 1(A) STUDY OF MS-DOS COMMANDS

AIM:

To study the simple OS interface MS DOS commands.

DIRECTORY RELATED COMMANDS:

1. DIR:

This command is used to display the files and directories of the current drive and

directory.

Syntax: DIR [drive:][path][filename]

DIR/P: To display files and directories page wise.

DIR/W: To display files and directories width wise ( horizontally ).

DIR/AD: To display directories only.

DIR/AH: To display hidden files only.

DIR/AR: To display read only files.

DIR/ON: To display files in sorted order name wise.

DIR/OS: To display files in sorted order size wise.

EXAMPLE:

C:\> DIR

2. MD [MAKE DIRECTORY]:

This command is used to create a new folder or directory.

Syntax: MD [drive:] [path]

Where drive is the floppy \ hard disk drive on which you want to create a new

directory.

EXAMPLE:

C:\> MD DRSJS

C:\>

3. CD [CHANGE DIRECTORY]:

This command is used to change current directory to another directory.

Syntax: CD [drive:][path]

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CD.. : This command is used to go to previous directory.

CD\ : This command is used to root directory.

EXAMPLE:

C:\> CD DRSJS

C:\DRSJS>

C:\> CD..

C:\>

4. RD [REMOVE DIRECTORY]:

This command is used to remove the directory.

SYNTAX: RD [directory]

Where directory is the name of the directory which we want to remove.

EXAMPLE:

C:\> RD DRSJS

C:\>

FILE RELATED COMMANDS:

1. COPY CON :

This command is used to create a new file.

SYNTAX : COPY CON [File Name]

EXAMPLE:-

C:\> copy con college

Sri Manakula Vinayagar Engineering College.

(Approved by AICTE New Delhi & Affiliated to Pondicherry University)

Ctrl Z or F6 to save the file.

2. TYPE:

This command is used to display the contents of the file.

SYNTAX: TYPE [File Name]

Example: C:\> type address

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3. REN:

This command is used to change the file name.

SYNTAX: REN [Old File Name] [New Name]

Example:

C:\>REN circle area

4. DEL:

This command is used to delete the file.

SYNTAX: DEL [File Name]

Example:-

C:\>DEL area

RESULT:

Thus the MS DOS directory related and file related commands have been studied

and executed.

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EX. No. : 1(B) STUDY OF TURBO C

AIM: To study the TURBO C IDE, compile and execute a simple C program.

DESCRIPTION:

The TURBO C development environment offers the following main menu

commands.

File

Edit

Search

Run

Compile

Debug

Options

Windows

Help

At the main menu, either press an arrow key to move to the desired option and then press

enter key or press the highlighted capital letters of the option. You can also press alt key

and the first letter of the option, which you desire to open.

FILE (ALT-F):

This menu offers choices for loading existing files, creating new files and saving

files. This menu contains New, Open, Save, Save as, Save all, Change dir, Print, Dos

Shell and Quit.

File ->New: This option is used to create a new program.

File ->Open (F3): This option is used to open an existing files.

File ->Save (F2): This option is used to save the program.

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File ->Save as: This option is used to save the program in another name.

File ->Change dir: This option is used to change the directory of existing folder

to another directory.

File ->Print: This option is used to print the existing programs.

File ->Dos shell: This option is used to come out from the c editor to dos shell.

To return to Turbo C, type exit and press enter and the DOS prompt.

File ->Quit: This option is used to exit from C editor.

EDIT: (ALT E): This command takes you to the edit window. In this menu, it is used

to modify the programs. In this menu we can copy, cut and paste the programs.

SEARCH (ALT S): This menu lets you to find particular part of the program, replace

the particular part of program and move to particular line number.

RUN (ALT-R): This menu lets you to compile, link and run our program and start and

debugging sessions.

RUN->RUN (CTRL+F9): This option is used to compile, link and run our program. If

we compile and link with the option debug source debugging on, your program will run

in debug mode. This command will stop execution at the first break point or it will run

the program all the way through. After compilation, to view the result press Alt-F5.

COMPILE (ALT-F9): This menu allows to invoke compile to obj, Make Exe file, Link

Exe file, etc., Alt-F9 is used to compile and create an object file. F9 command is used to

build a execution file.

DEBUG: This menus options let you look at and change variable values, go to the

declaration of any function in the source code and look at the call stack. Break/Watch

option is used to insert, remove and go breakpoint in your program and set delete and edit

watch expressions.

PROJECT (ALT-P): This menu is used to define and manage project.

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OPTIONS (ALT-O): This menu allows configuring the Turbo C Editor.

WINDOWS (ALT-W): This menu is used to Cascade all files, move programs and close

all programs.

STEPS FOR PROGRAM WRITING:

1. Invoke Turbo C editor using StartRunc:tc\bin\tc

2. Type the source program.

3. Save the program using F2 command. (filename.c)

4. Compile and run the program using Alt F9.

5. To view the result use Alt F5.

SAMPLE 1: Write a program to print simple interest.

/* program to find simple interest */

#include

void main()

{

float p,n,r,si;

clrscr();

printf(Enter principle, Number of years and Rate of Interest :\n);

scanf(%f%f%f,&p,&n,&r);

si=(p*n*r/100);

printf(The Simple Interest is : %2.2f: ,si);

getch();

}

OUTPUT:-

Enter principle, Number of years and Rate of Interest:

5000

5

10

The Simple Interest is: 2500.00

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SAMPLE 2: Write a program to generate Sales slip.

/************** SALES SLIP ***************/

#include int main()

{

float purchase, tax_amt, total, rate=0.125;clrscr();

printf("\n Amount of purchase: ");

scanf("%f",&purchase);

tax_amt = purchase * rate;total = purchase + tax_amt;

printf("\n Purchase is : %0.2f ",purchase);

printf("\n Tax : %0.2f",tax_amt);

printf("\n Total : %0.2f",total);getch();

}

OUTPUT 1:

Amount of purchase: 500

Purchase is: 500.00

Tax : 62.50Total : 562.50

OUTPUT 2:

Amount of purchase: 1773

Purchase is: 1773.00

Tax : 221.62

Total : 1994.62

RESULT:

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Thus the options in the TURBO C IDE have been studied and a simple C program

is compiled and executed.

EX. No. : 2 MS-WORD MAIL MERGE

AIM:

To create Student Progress Report as the main document and create 45 reports

for 45 students. Use mail merge to create reports for 42 students among the 45.

PROCEDURE:

1. Open your letter in Word and then bring up the Mail Merge Sidebar Wizard by

going to Tools > Letters and Mailings > Mail Merge.

2. The sidebar will appear on the right side of the window, next to your document.

3. Check the letter option from the document type and click Next below the

wizard.

4. Leave the Use the current document checked and click on Next: Select

recipients to move on.

5. This step is used to select the data source for the recipient list. Check the Type a

new list option to create a new data source list or leave the checked option Use

existing list and then click Next. A Select Data Source dialog box will

appear. Choose the data source from the existing list and then clickopen.

6. Mail merge recipient dialog box will appear choose the recipients, you want to

send letter from the list and then clickok.

7. The next part is inserting recipient information from the data source into the Word

document.

8. To do this, first select the place in the document where you want to insert a field

from the data source and click on More items. A dialog box will pop-up, giving

you a list of all of the fields that are possible to insert.

9. Select the field that you want to insert and click Insert. It will replace the

selected section of text with field_name.

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10. Once you have entered all of your merged fields into the correct places and

checked the formatting around them, click on Next: Preview your letters.

11. You can preview your letters to make sure that everything will look correct once

the records from the data source are merged. You can check different recipients

letters by using the arrows, look for a specific record by searching the merge

fields, or even exclude one from the merge.

12. Once your merge is set up correctly you can complete it by clicking next

complete the merge.

13. Next you can choose to eitherprint the letters orview the merge as individual

letters. Either option will bring up the dialog box. You can choose to merge all

of the records in the data source, just the Current record that you are

displaying in the preview, or a certain section of continuous records.

14. Selecting Edit individual letters will open up a new Word document (usually

called Letters 1). In this document, each page will contain the form letter with

one of the records merged into it.

15. You can then edit individual letters if you want to. For example if you want to add

a message to a specific recipient you can do it in this step.

16. Thus the document is merged successfully with the selected recipient.

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EX. No. : 3 EXCEL CHARTS

AIM:

To try with different types of graphs (bar, XY, Pie) for the following data,

Test results of a student in semester I

Test T1 T2 PT1 T3 T4 PT2

Marks 100 100 54 95 88 98

PROCEDURE:

1. Enter the data in the worksheet as shown in question

2. Choose Chart option from the Insert menu, or choose the Chart Wizard button

from the standard toolbar

3. Shows the chart wizard Step1 of 4 Chart Type Dialog Box.

4. Choose the appropriate chart type from the chart type list box then click next.

5. Shows the chart wizard step 2 of 4 Chart Source Data Dialog Box then click

Next.

6. Shows the chart wizard step 3 of 4 Chart Options Dialog Box, here you can give

the Chart Titles i.e., X and Y-Axis Titles etc, and then clickNext.

7. Shows the chart wizard step 4 of 4 Chart Location Dialog Box then clickFinish.

8. Now the chart is displayed in your active worksheet, as shown below.

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SNAPSHOTS

Figure 1: XY chart

Figure 2: Bar chart

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Figure 3: Pie chart

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EX. No. : 4 GREATEST OF THREE NUMBERS

AIM:

To write a C program to find the largest of three numbers using conditional and IF

statement.

ALGORITHM

1. Start

2. Read three numbers A, B, C

3. Compare whether A is greater than B and C using conditional operator

4. If it is equal then print A is greater

5. If step 3 is false check whether B is greater than A and C using conditional

operator.

6. If it is true print B is greater

7. If step 5 is false print C is greater

8. Stop

PROGRAM

/***** GREATEST OF THREE NUMBERS USING

IF AND CONDITIONAL OPERATOR *****/

#include

#include

void main()

{

clrscr();

int a,b,c;

printf("enter 3 numbers");

scanf("%d %d %d",&a,&b,&c);

printf("\n Using conditional");

printf("\n");

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(a>b&&a>c)?printf("A is larger"):(b>a&&b>c)?printf("B is larger"):printf("C is

larger");

printf("\n Using IF \n");

if(a>b && a>c)

printf("A is largest");

else

if(b>a&&b>c)

printf("B is largest");

else

printf("C is largest");

getch();

}

OUTPUT

Enter 3 numbers 2 5 6

Using conditional

C is larger

Using IF

C is largest

RESULT

Thus the largest of three numbers using conditional and if statement was

successfully executed.

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EX. No. : 5 SWAPPING OF TWO NUMBERS

AIM

To write a C program to swap two numbers using temporary variable and without

using temporary variable.

ALGORITHM

1. Start

2. Read two numbers A, B

3. Copy A to TEMP

4. Copy B to A

5. Copy TEMP to B

6. Print A, B

7. Calculate A=A+B, B=A-B, A=A-B

8. Display A, B

9. Stop

PROGRAM

/***************** SWAPPING OF TWO NUMBERS *****************/

#include

#include

void main()

{

clrscr();

int a,b,temp;

printf("Enter Two numbers");

scanf("%d %d",&a,&b);

printf("\nSwapping Using Temporary Variable\n");

printf("\n Before Swap A=%d B=%d",a,b);

temp=a;

a=b;

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b=temp;

printf("\nAfter Swap A=%d B=%d",a,b);

printf("\nSwapping Without Using Temporary Variable\n");

printf("\n Before Swap A=%d B=%d",a,b);

a=a+b;

b=a-b;

a=a-b;

printf("\nAfter Swap A=%d B=%d",a,b);

getch();

}

OUTPUT

Enter Two numbers 3 2

Swapping Using Temporary Variable

Before Swap A=3 B=2

After Swap A=2 B=3

Swapping Without Using Temporary Variable

Before Swap A=2 B=3

After Swap A=3 B=2

RESULT

Thus swapping of two numbers using temporary variable and without using

temporary variable was done and successfully executed.

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EX. No. : 6 QUADRATIC EQUATION

AIM:

To write a c program to solve Quadratic Equation for various possible inputs.

ALGORITHM:

1. Start the program.

2. Get the values of A,B,C for a quadratic equation of the form ax2+bx+c=0.

3. Compute discriminate value d as D=B2-4AC.

4. Check for D is D=0 then go to step 5, otherwise go to step 8.

5. Compute the value of the roots (i.e) E = -B/2A.

6. Display that the roots are Real and Unequal.

7. Check for D, if D>0 then go to step 9, otherwise go to 1.

8. Display that The roots are real and Unequal.

9. Compute the value of the roots ( i.e ) E=-B+sqrt(D)/2A and F=-B-sqrt(D)/2A.

10. Display the value of the roots and move to 5.

11. Check for D, if D


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float r1,r2,e,f;

clrscr();

printf("\nEnter the co-efficient of x^2:\t");

scanf("%d",&a);

printf("\nEnter the co-efficient of x:\t");

scanf("%d",&b);

printf("\nEnter the constant value:\t");

scanf("%d",&c);

printf("\n\nSOLUTION:\n***********");

d=(b*b)-(4*a*c);

if(d==0)

{

r1=-((float)b/(float)(2*a));

printf("\n The roots are real and equal");

printf("\n The roots are:\n\t root1=root2=%f",r1);

}

else

{

if(d>0)

{

r1=(-b+sqrt(abs(d)))/(2*a);

r2=(-b-sqrt(abs(d)))/(2*a);

printf("\nThe roots are real and unequal");

printf("\nThe roots are:\n\t root1=%f\t root2=%f",r1,r2);

}

else

{

e=(float)-b/(float)(2*a);

f=(sqrt(abs(d)))/(2*a);

printf("\nThe roots are imaginary");

printf("\n\nThe roots are:\n root1=%.2f+i%.2f",e,f);

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printf("\troot2=%7.2f-i%.2f",e,f);

}

}

getch();

}

OUTPUT 1:

Enter the co-efficient of x^2 : 2

Enter the co-efficient of x : 4

Enter the constant value : 2

SOLUTION:

The roots are real and equal

The roots are

root1 = root2 = -1.00

OUTPUT 2:




SOLUTION:

The roots are imaginary

The roots are

root1 = -0.25 + i1.39 root2 = -0.25 + i1.39

OUTPUT 3:




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SOLUTION:

The roots are real and unequal

The roots are

root1 = -0.59

root2 = -3.41

RESULT:

Thus a C program to solve the quadratic equation was compiled and executed

successfully.

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EX. No. : 7 COUNTING NUMBER OF VOWELS AND DIGITS IN A STRING

AIM

To write a C program to count the number of vowels and digits in a given string

using switch case statement.

ALGORITHM

1. Start

2. Read a string CH

3. Loop until CH is equal to new line

4. Check whether the entered character is vowel or a digit using switch case

5. If it is vowel increment VOWEL

6. If it is digit increment DIGIT

7. End loop

8. Print VOWEL, DIGIT

9. Stop

PROGRAM

/**** COUNTING NUMBER OF VOWELS AND DIGITS

IN A STRING USING SWITCH CASE ****/

#include

#include

void main()

{

clrscr();

char ch;

int digits=0,vowels=0;

printf("Enter a string with digits\n");

while((ch=getchar())!='\n')

{

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switch(ch)

{

case '0':

case '1':

case '2':

case '3':

case '4':

case '5':

case '6':

case '7':

case '8':

case '9':

digits++;

break;

case 'a':case 'A':

case 'e':case 'E':

case 'i':case 'I':

case 'o':case 'O':

case 'u':case 'U':

vowels++;

break;

}

}

printf("\n No. of vowels in the given string %d",vowels);

printf("\n No. of digits in the given string %d",digits);

getch();

}

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OUTPUT

Enter a string with digits

COMPTER PROGRAMMING 123

No. of vowels in the given string 5

No. of digits in the given string 3

RESULT

Thus a C program to count the number of vowels and digits using switch case was

compiled and executed successfully.

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EX. No. : 8(A) GENERATION OF PRIME NUMBERS

AIM:

To write a C program to generate all prime numbers in a given range.

ALGORITHM:

1: Start the program.

2: Get the range of prime numbers N

3: Check if N= =1 if equal go to step 4

4: Print number is not valid to generate prime.

5: By using for loop check (i


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for(j=1;j


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EX. No. : 8 (B) FIBONACCI SERIES

AIM:

To write a c program to generate the Fibonacci series.

ALGORITHM:

1. Start

2. Initialize FIB1 = 0, FIB2 = 1, FIB3, NUMBERS = 2, COUNTER = 2

3. Read NUMBERS

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int fib1 = 0,fib2 = 1,fib3,numbers = 2,counter = 2;

printf("How many Fibonacci number you need ? : ");

scanf("%d",&numbers);

if (numbers < 3)

exit(0);

printf("%d ",fib2);

do

{

counter++;

fib3 = fib1 + fib2;

printf("\n%d",fib3);

fib1 = fib2;

fib2 = fib3;

} while (counter


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EX. No. : 9 COSINE SERIES USING LOOP

AIM

To write a C program to find the cosine series for a given range and an angle.

ALGORITHM

1. Start

2. Read ANGLE, N

3. Calculate X=ANGLE*3.14/180

4. Initialize TERM=1, SUM=1, Y=1

5. Loop i=1 to n

6. Y= Y*(2*i*(2*i-1));7. TERM=(-TERM*X*X)/Y)

8. Increment SUM to TERM

9. End loop

10. Print ANGLE, X, SUM

11. Stop

PROGRAM

/************** COSINE SERIES USING FOR LOOP *************/

#include

#include

void main()

{int i,n,y=1;

float x,angle,term,sum;

clrscr();printf("Enter the angle and the number of terms\n");

scanf("%f %d",&angle,&n);

x=angle*3.141592/180;term=1;

sum=1;

for(i=1;i


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y=y*(2*i*(2*i-1));

term=(-term*x*x)/y;

sum+=term;}

printf("Entered angle = %.4f\n",angle);

printf("Its radian value =%.3f\n",x);printf("Value of Cosine series= %.3f\n",sum);

getch();

}

OUTPUT

Enter the angle and the number of terms

45 5

Entered angle = 45.00

Its radian value = 0.785

Value of Cosine series = 0.707

RESULT

Thus the cosine series for the given range and angle was compiled and executed

successfully.

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EX. No. : 10 MATRIX OPERATIONS

AIM:

To write a C program to perform the matrix operation (Addition, Transpose and

Multiplication).

ALGORITHM

1. Start

2. Read the order of matrix M,N

3. Read the value of two matrices A,B

4. Set loop i=0 to m and j=0 to N5. Calculate c[i][j]=a[i][j]+b[i][j]

6. End loop

7. Print c[i][j]

8. Initialize c[i][j]=0

9. Set loop i=0 to M j=0 to N and k=0 to N

10. Calculate c[i][j]=c[i][j]+a[i][k]*b[k][j]

11. End loop

12. Print c[i][j]

13. Set loop i=0 to M and j=0 to N

14. Assign t[i][j]=a[j][i]

15. End loop

16. Print t[i][j]

17. Stop

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PROGRAM

/*** MATRIX OPERATIONS - ADDITION, TRANSPOSE & MULTIPLICATION ***/

#include#include

void main()

{int n,i,j,a[3][3],b[3][3],c[3][3],m,k;

clrscr();

printf("Enter the order of two Matrices");scanf("%d %d",&m,&n);

printf("\n Enter the Matrix A");

for(i=0;i


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for(j=0;j


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OUTPUT

Enter the order of two Matrices 3 3

Enter the Matrix A

4 1 44 4 4

4 1 4

Enter the Matrix B

2 2 2

2 2 2

2 2 2

Matrix addition

6 3 6

6 6 6

6 3 6

Matrix Multiplication

18 18 18

24 24 24

18 18 18

Transpose of matrix A

4 4 4

1 4 1

4 4 4

RESULT

Thus the C program to perform the matrix operations was compiled and

successfully executed.

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EX. No. : 11 SINE SERIES USING RECURSIVE FUNCTION

AIM

To write a C program to perform the sine series using recursive function.

ALGORITHM

1. Start

2. Read X,N

3. Calculate X=3.14/180

4. Assign SUM=X

5. Cal and print function sine(N,X)

6. Stop

Function sine(n,x)

1. Initialize i=1, Y=1 as static

2. If N==1 return sum

3. If N>0

4. Y= Y*(2*i)*(2*i+1);

5. Calculate TERM=-TERM*X*X/Y

6. Increment I to 1

7. SUM=SUM+TERM

8. TERM=sine(--n,x)

9. return SUM

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PROGRAM

/************** SINE SERIES USING RECURSIVE FUNCTION *************/

#include

#include#include

#define PI 3.14285

float sum;void main()

{

int n;

float x;double sine(int,float);

clrscr();

printf("\n Enter the angle: ");

scanf("%f",&x);x*=(PI/180.0);

printf("Enter the no. of terms to be summed:");scanf("%d",&n);

sum=x;

printf("Sum of the series :%.4f\n",sine(n,x));getch();

}

double sine (int n, float x){

static float term;

static float i=1;static int y=1;

if(n==1)

return sum;if(i==1)

term=x;

if(n>0)

{y=y*(2*i)*(2*i+1);

term=-term*x*x/y;

i++;sum+=term;

term=sine (--n,x);

}if(n


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}

return sum;

}

OUTPUT

Enter the angle: 30

Enter the no. of terms to be summed: 5

Sum of the series: 0.4999

RESULT

Thus the C program to perform the sine series using recursive function was

compiled and executed successfully.

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EX. No. : 12 REMOVING DUPLICATE STRING FROM A GIVEN SENTENCE

AIM:

To write a C program to remove the duplicate string from the given sentence.

ALGORITHM

1. Start

2. Read the sentence in bin variable from the user

3. Separate the words and store it in temp variable which is two dimension array

4. Compare the consecutive words in temp upto the word count

5. If it is not equal print the word else do not print that word

6. Repeat 4 and 5 until all the words in temp are compared

7. Stop

PROGRAM

/**** REMOVE DUPLICATE STRING FROM A GIVEN SENTENCE ****/

#include

#include #include

#include

void main(void)

{

char temp[10][20];char bin[100];

int index=0;

int word=0,len=0;

int loop,chain;clrscr();

printf("\nEnter the sentence: ");

gets(bin);

while(bin[index]!=NULL)

{if(isalpha(bin[index]) || isdigit(bin[index]))

{

temp[word][len]=bin[index];

len++;

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}

else if(isalpha(bin[index-1]) || isdigit(bin[index-1]))

{temp[word][len]=NULL;

word++;len=0;

}index++;

}

temp[word][len]=bin[index];word++;

printf("\nThe output data is: ");

for(index=0;index


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EX. No. : 13 ARRAY OF STRUCTURES

AIM

To write a C program to create an array of structures for a list of items with the

following details

Item_Code Item_Name

102 Paste-Colgate

102 Paste-Pepsodent

102 Paste-Close-up

101 Soap-Cinthol

101 Soap-Lux

101 Soap-Hammam

101 Soap-Dove

Arrange the set of items in ascending order of its Item_Code and descending

order of its Item_Name as given below

Item_Code Item_Name

101 Soap-Lux

101 Soap-Hamam

101 Soap-Dove

101 Soap-Cinthol

102 Paste-Pepsodent

102 Paste-Colgate

102 Paste-Close-up

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ALGORITHM

1. Start

2. Define structure item with the members

Item_code : integerItem_name : character

end item

3. Read the given details in item_code and item_name

4. Set loop i=0 to 6 and j=1 to 6

5. Check if a[i].item_code


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PROGRAM

/******************* ARRAY OF STRUCTURES ******************/

#include#include

#include

void main(){

clrscr();

int i,j,temp;

char temp1[30];struct item

{

int item_code;

char item_name[30];}a[7];

printf("Enter the item code and item name");for(i=0;i


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}

printf("Item_Code \t\t\t Item_Name");

for(i=0;i


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EX. No. : 14 USER-DEFINED DATA TYPE USING STRUCTURE

AIM

To write a C program to create a user defined data type using structure to accept a

list of N numbers of students with their names and roll numbers and arrange them in analphabetical order and write the details in the file.

ALGORITHM

1. Start

2. Create a user-defined structure tag with the members

name: character

rno: integer

3. Open the file details .txt in writing mode

4. Read no for the number of student details

5. Read all the student details in name, rno

6. Before sorting print the student details and same time write it in the file details.txt

7. Using function sort(), sort the names upto no count

8. After sorting print the student details and same time write it in the file

9. Stop

PROGRAM

/********* USER-DEFINED DATA TYPE USING STRUCTURE ********/

#include

#include

#includestruct tag

{

char name[10];

int rno;};

typedef struct tag node;

node s[10],t[10];void main()

{

FILE *fp;int no,i;

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fp=fopen("details.txt","w");

clrscr();

fflush(stdin);printf("\n Enter the Number of students:");

scanf("%d",&no);

for(i=0;i


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{

temp=s[i];

s[i]=s[j];s[j]=temp;

}

}}

}

OUTPUT

Enter the Number of students: 2

Enter the name of student 1=Sundar

Enter the roll number=30

Enter the name of student 3=Reshma

Enter the roll number=25

Before Sorting...

30 Sundar

25 Reshma

After Sorting...

25 Reshma

30 Sundar

The data are written successfully to the file

RESULT

Thus the C program to accept a list of N numbers of students with their names and

roll numbers are arranged in an alphabetical order and successfully written to the file

using user defined data type using structure.

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EX. No. : 15 SORTING OF NAMES USING ARRAY OF POINTERS

AIM

To write a C program to sort the given names using array of pointers.

ALGORITHM

1. Start

2. Read n for number of names to be sorted

3. Read the names

4. Set loop i=0 to n and j=1 to n

5. Compare the first name with second name if is greater than 0

6. Interchange the first name and the second name using third variable

7. Repeat until all the names are sorted8. Print the sorted names

9. Stop

PROGRAM

/****** SORTING OF NAMES USING ARRAY OF POINTERS ******/

#include

#include#include#include

#define MAX 10

void main(){

clrscr();

char *names[MAX],temp[15],*temp1;int n,i,j,len;

printf("Enter the no. of names to be sorted");

scanf("%d",&n);

*names=NULL;fflush(stdin);

printf("enter the names one by one\n");

for(i=0;i


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strcpy(*(names+i),temp);

}

for(i=0;i


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EX. No. : 16 FUNCTIONS WITH STATIC DATA TYPE

AIM

To write a C program using functions with static data type.

ALGORITHM

1. Start

2. Call function f1()

3. Print after first call


5. Print after second call


7. Print after third call8. Stop

Function f1()

1. Initialize k= 0 as static and j=10

2. Print the value of k and j

3. Calculate k=k+10

PROGRAM

/********* FUNCTIONS WITH STATIC DATA TYPE*********/

#include int g = 10;

main()

{void f1();

clrscr();

f1();

printf(" after first call \n");f1();

printf(" after second call \n");

f1();printf(" after third call \n");

getch();

}

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void f1()

{

static int k=0;int j = 10;

printf("\nValue of k = %d and j = %d",k,j);

k=k+10;}

OUTPUT

Value of k = 0 and j = 10 after first call

Value of k = 10 and j = 10 after second call

Value of k = 20 and j = 10 after third call

RESULT

Thus the C program using functions with static data type was compiled and

executed successfully.

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EX. No. : 17(A) IMPLEMENTING DEL COMMANDS USING FILE

AIM

To write a C program to implement the DEL command using file.

ALGORITHM

1. Start

2. Pass the command line argument to the parameter argc and argv in main function

3. If argc is not equal to 2

4. Print parameter missing

5. Remove the entered file using remove function

6. If it is removed correctly print removed filename

7. Else print error

8. Stop

PROGRAM

/********************* DEL COMMAND USING FILE *******************/

#include

#include

int main(int argc,char *argv[])

{

if(argc!=2)printf("Parameter missing");

if (remove(argv[1]) == 0)

printf("Removed %s \n",argv[1]);else

perror(" ERROR");

return 0;

}

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OUTPUT

C:\TURBOC2> DELFILE details.txt

Removed details.txt

RESULT

Thus the C program to implement the DEL command using file was compiled and

executed successfully.

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EX. No. : 17(B) COPY COMMAND USING FILE

AIM

To write a C program to implement the COPY command using file.

ALGORITHM

1. Start

2. Pass the command line argument to the parameter argc and argv in main function

3. Check if argc not equal to 3

4. If true print parameter missing

5. Open the first file in reading mode and second file in append mode

6. Set loop to read the characters from the first file

7. Copy the character to second file

8. Repeat until EOF is reached

9. Print file is successfully copied

10. Stop

PROGRAM

/***************** COPY COMMAND USING FILE *****************/

#include#include

void main(int argc,char *argv[])

{FILE *fp1,*fp2;

int i,ch;

clrscr();if(argc!=3)

{

printf("Program parameter missing");exit(0);

}

fp1=fopen(argv[1],"r");

fp2=fopen(argv[2],"a");

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while((ch=getc(fp1))!=EOF)

putc(ch,fp2);

printf("file %s is successfully copied",argv[1]);getch();

}

OUTPUT

C:\TURBOC2> CREATE result.txt update.txt

file result.txt is successfully copied

RESULT

C Lab Manual-1

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Transcript of C Lab Manual-1