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C If else-if ladder Statement

The if…else ladder allows you to check between multiple test expressions and execute different statements.

It is used in the scenario where there are multiple cases to be performed for different conditions.

Syntax

if(boolean_expression 1) {
   /* Executes when the boolean expression 1 is true */
} else if( boolean_expression 2) {
   /* Executes when the boolean expression 2 is true */
} else if( boolean_expression 3) {
   /* Executes when the boolean expression 3 is true */
} else {
   /* executes when the none of the above condition is true */
}

Flowchart

Flowchart of else-if ladder statement in C

Example

#include<stdio.h>    
int main(){    
int number=0;    
printf("enter a number:");    
scanf("%d",&number);     
if(number==10){    
printf("number is equals to 10");    
}    
else if(number==50){    
printf("number is equal to 50");    
}    
else if(number==100){    
printf("number is equal to 100");    
}    
else{    
printf("number is not equal to 10, 50 or 100");    
}    
return 0;  
}   
Example of else-if ladder statement in C – Output