MATLAB - if...elseif...elseif...else...end Statements


An if statement can be followed by one (or more) optional elseif... and an else statement, which is very useful to test various conditions.

When using if... elseif...else statements, there are few points to keep in mind −

Syntax

if <expression 1>
   % Executes when the expression 1 is true 
   <statement(s)>

elseif <expression 2>
   % Executes when the boolean expression 2 is true
   <statement(s)>

Elseif <expression 3>
   % Executes when the boolean expression 3 is true 
   <statement(s)>

else 
   %  executes when the none of the above condition is true 
   <statement(s)>
end

Example

Create a script file and type the following code in it −

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

When the above code is compiled and executed, it produces the following result −

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