C Programs - Unix

7/27/2019 C Programs - Unix

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FUNCTION WITH NO ARGUMENTS AND NO RETURN VALUES

#include

void sum(void);

main()

{

sum();

}

void sum(void)

{

int num1, num2, num3;

printf("Enter two numbers: \n");

scanf("%d%d", &num1, &num2);

num3=num1+num2;

printf("Summation of %d and %d is %d \n", num1, num2, num3);

}

OUTPUT

Enter two numbers:

10

20

Summation of 10 and 20 is 30


2/16

FUNCTION WITH ARGUMENTS AND RETURN VALUES

#include

#include

int largest(int, int);

void main()

{

int a,b,big;

printf("Enter two numbers : \n");

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

big=largest(a,b);

printf("Largest Element = %d", big);

}

int largest(int a1, int b1)

{

if(a1>b1)

return a1;

elsereturn b1;

}

OUTPUT

Enter two numbers

15

25

Largest Element = 25


3/16

DYNAMIC ALLOCATION OF MEMORY

#include

main()

{

int *p;

p=(int *)malloc(sizeof(int));

if(p==0)

{

printf(" ERROR : Out of Memory \n");

return 1;

}

*p=5;

printf("Value of P = %d \n", *p);

printf("Address of P = %u \n", p);

free(p);

return 0;

}

OUTPUT

Value of P = 5

Address of P =134518200


4/16

ALLOCATE SPACE FOR A STRING DYNAMICALLY AND

PRINT THE STRING BACKWARDS

#include

#include

int main()

{

char *s;

register int i;

s=malloc(80);

if(!s)

{

printf("Memory request failed................. \n");

exit(1);

}

scanf("%s",s);

for(i=strlen(s)-1; i>=0; i--)

printf("%c",s[i]);free(s);

return 0;

}

OUTPUT

Hai

iaH


5/16

BINARY SEARCH USING FUNCTION

#include

#include

int main()

{

int bsearch(int x[],int n,int s);

int x[20],i,n,s;

printf("How many numbers?");

scanf("%d",&n);

printf("Enter all numbers in the list");

for(i=0;is)


6/16

end = mid;

else

if(x[mid]


7/16

FACTORIAL IN FINDING ncr USING FUNCTION

#include

#include

int main()

{

int fact(int k);

int n,r,ncr;

printf("\n Enter value to n and r:");

scanf("%d %d", &n,&r);

ncr=fact(n)/(fact(r)*fact(n-r));

printf("\n Value of ncr = %d",ncr);

}

int fact(int k)

{

int i, p=1;

for(i=1;i


8/16

COSINE SERIES USING FUNCTION

#include

#include

int main()

{

float cosine(float x);

float x=0;

printf("\n x in degrees cos(x) ");

while (x


9/16

return(s);

}

OUTPUT

----------------------------------------------------------------------

x in degrees cos(x)

----------------------------------------------------------------------

0 1.0

30 0.87

60 0.50

90 0.00

120 -0.50

150 -0.87

180 -1.00


10/16

PRODUCT OF MATRIX USING ARRAYS

#include

#include

int main()

{

int *a[10],*b[10], *c[10], m,n,l,i,k,j;

for(i=0;i


11/16

for(j=0;j


12/16

Resultant Matrix is

26 9 5

4 -28 18

18 19 -3


13/16

CREATION & READING THE CONTENT OF A FILE

#include

#include

struct emp

{

int eno;

char ename[20];

float bpay;

};

FILE *efile;

int main()

{

struct emp erec;

int n,i;

efile = fopen("EMPLOY.DAT", "w");

printf("\nEnter the number of employees:");

scanf("%d",&n);for(i=1;i


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printf("\nAfter adding content to the file");

efile=fopen("EMPLOY.DAT","r");

printf("\n--------------------------------------------------");

printf("\n Emp.no Employee name Basic Pay");

printf("\n --------------------------------------------------\n");

fread(&erec,sizeof(erec),1,efile);

while (!feof(efile))

{

printf("\n %d \t %-20s %0.2f",erec.eno,erec.ename,erec.bpay);

fread(&erec, sizeof(erec),1,efile);

}

printf("\n --------------------------------------------------");

fclose(efile);

return 0;

}

OUTPUT

Enter the number of Employees: 2

Enter the 1 employee details :

Enter the Employee number: 101Employee name: xxxx

Basic Pay: 65433.4

Enter the 2 employee details :

Enter the Employee number: 102

Employee name: yyyy

Basic Pay: 7000

After adding content to the file

-----------------------------------------------------------

Emp.no Employee name Basic Pay

----------------------------------------------------------

101 xxxx 65433.4

102 yyyy 7000.0


15/16

----------------------------------------------------------

APPENDING A RECORD TO THE FILE

#include

#include

struct emp

{

int eno;

char ename[20];

float bpay;

};

FILE *efile;

int main()

{

struct emp erec;

efile = fopen("EMPLOY.DAT", "a");

printf("\nEnter the Employee number");

scanf("%d",&erec.eno);printf("Employee Name");

scanf("%s",erec.ename);

printf("Basicpay");

scanf("%f",&erec.bpay);

fwrite(&erec,sizeof(erec),1,efile);

fclose(efile);

printf(" After Appending the content of file");

efile=fopen("EMPLOY.DAT","r");

printf("\n--------------------------------------------------");

printf("\n Emp.no Employee name Basic Pay");

printf("\n --------------------------------------------------");

fread(&erec,sizeof(erec),1,efile);


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while (!feof(efile))

{

printf("\n %d \t %-20s %0.2f",erec.eno,erec.ename,erec.bpay);

fread(&erec, sizeof(erec),1,efile);

}

printf("\n --------------------------------------------------\n");

fclose(efile);

return 0;

}

OUTPUT

Enter the Employee number: 103

Employee name: zzzzBasic Pay: 12000

After Appending the content of file

-----------------------------------------------------------

Emp.no Employee name Basic Pay

----------------------------------------------------------

101 xxxx 65433.4

102 yyyy 7000.0

103 zzzz 12000.0

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