Nested Loop In C Programming

One loop inside another loop is called Nested loop. Here we will discuss about this.

Syntax of a Nested for loop

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for ( variable initialization ;  condition ;  variable update ) {       for ( variable initialization ;  condition ;  variable update )       {           // body statement.       } }

Example of a Nested for loop. This program will print “Outer Loop” 3 times. After every time it will print “Inner Loop” 2 times.

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#include <stdio.h>   int main() {      for(int i = 1;  i <= 3;  i++)      {            printf( “%d. Outer Loop \n”, i );            for(int j = 1;  j <= 2;  j++)            {                  printf ( " Inner Loop \n", j );            }            printf(“ \n ”);      }      return 0; }

Output

1. Outer Loop
Inner Loop
Inner Loop

2. Outer Loop
Inner Loop
Inner Loop

3. Outer Loop
Inner Loop
Inner Loop

Note : We can use any loop inside any other loop. For an example we can use while loop inside a for loop or vice versa.

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