MATLAB-if ... elseif ... elseif ... else ... end statement

MATLAB Conditional Statements

oneifstatement can be followed by one (or more) optionalelseif...and oneelsestatement, which is very useful for testing various conditions.

When using the if ... elseif ... else statement, remember the following points:

• An if can have zero or another, and it must be after the other elseif.

• An if can have zero or more elseif, and they must be located before else.

• If the else if is successful, the rest of the elseif will not be tested.

Syntax

if <expression　1>
　　　%When the expression1Execute when it is true
　　　<statement(s)>
elseif <expression　2>
　　　%When the Boolean expression2Execute when it is true
　　　<statement(s)>
Elseif <expression　3>
　　　%When the Boolean expression3Execute when it is true
　　　<statement(s)>
else　
　　　%Execute when all of the above conditions are not true
　　　<statement(s)>
end

Online Example

Create a script file and enter the following code-

a =　100;
%Check Boolean Condition
　　　if a ==　10　
　　　　　　%If condition is true, then print the following content　
　　　　　　fprintf('Value of a is　10\n');
　　　elseif( a ==　20 )
　　　　　　%If the condition is true　
　　　　　　fprintf('Value of a is　20\n');
　　　elseif a ==　30　
　　　　　　%If the condition is true
　　　　　　fprintf('Value of a is　30\n');
　　　else
　　　　　　%If none of the conditions are true
　　　　　　fprintf('None of the values are matching\n');
　　　fprintf('Exact value of a is: %d\n', a);
　　　end

None of the values are matching
Exact value of a is:　100

MATLAB Conditional Statements