CONDITIONAL CONTROLMatlab Scripts

FLOW CONTROL IN MATLAB Conditional control – if, else, switch Loop control – for, while, continue, break Program termination – return

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if, else, and elseif for while

CONDITIONAL CONTROL – IF, ELSE, ELSEIF

if test statement statementselseif test statement statementselse statementsend

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if I == JA(I,J) = 2;

elseif abs(I-J) == 1A(I,J) = -1;

else A(I,J) = 0;end

• Conditional statements are commands that allows MATLAB to decide whether or not to execute some code that follows the statement

• Conditional statements use relational operators like ==,~=,>,< (Note that are all scalar tests)

IF / ELSE / ELSEIF

If the conditional expression is true, MATLAB runs the lines of code that are between the line with if and the line with end.

If the conditional expression is false, MATLAB skips the code between if and the line with else and runs the code up to end.

height=input(‘Plz enter the height:‘)if height>170 disp('tall')elseif height<150 disp('small')else disp('average')end

EXAMPLES

EXAMPLESA program to make a discount of 20% if the no.

of books are greater than 5clc; books=input(‘Enter the no of Books: ');cost=books*25;if books > 5cost=(1 -20/100)*cost; % 20% discountdisp(cost)end

EXAMPLESThe following program check if the input digital voltage

signal is positive or not.V=input(‘Please Enter the Voltage: ')if V < 5 % If voltage is less than 5 V out_1 = 0 %Output is zeroelseif V == 5 % If voltage is equal to 5 V out_1 = 0.5 % Output is o.5else out_1 = 1 % In other cases output is 1end

EXAMPLEWrite a MATLAB program to input the values of x,y then

print 'y is greater than x‘ if y is greater and 'x is greater than y‘ if x is greater and 'x =y‘ if they are equal.

clear all,clc; x=input('enter the value x ');y=input('enter the value y ');if (x<y) disp ('y is greater than x');elseif (x>y) disp ('x is greater than y');else disp ('x is =y');end

EXAMPLES Program to find grade from the mark

s=input('Enter the Mark: '); % enter the markif s>= 90 disp ('Grade: A');elseif s>=80 disp ('Grade: B');elseif s>=70 disp ('Grade: C');elseif s>=60 disp ('Grade: D');else disp ('Grade: F');end

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Shameer KoyaTHANK

YOU