Nested if-else Statement with Syntax and Examples in C

There are following types of conditional statements in C :

• if statement
• if - else statement
• nested if-else statement
• if -else if ladder
• switch statement

3. Nested if-else statement - The "if" and "else" statements inside the body of “if” or "else" statements is "nested if-else". As the  conditions are tested in "if-else" the test goes through the "Nested if-else" .

Syntax :

if (condition)

{ 

   if(condition)

   {

       // Body of the loop.

       // These statements will only execute if the condition is true.

   }

   else

   {

       // Body of the loop.

       // These statements will only execute if the condition is false.

   }

}

else

{ 

   if(condition)

   {  

       // Body of the loop.

       // These statements will only execute if the condition is false.

   }

}

Flow Diagram of Nested if-else statement

Example of Nested if-else statement in C

#include<stdio.h>

#include<conio.h>

int main()

{

   int  a=10,b=10;

   if(a<=b)  //if condition statement

    {

         if(a=b)  //nested if condition statement

         {

             printf("Value of a is equal to b."); //display output

         }

         else  //nested else condition statement

         {

             printf("Value of a is less than b");  //display output

         }

    } 

   else  //else condition statement

    {

       printf("Value of b is less than a"); //display output

    }

  getch();

}

OUTPUT:

Value of a is equal to b.