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1. C / ANSI-C
2. Language Basics
3. For

Nested for

#include <stdio.h>

void main()
{
   long sum = 0L; 
   int i = 1;     /* Outer loop control variable     */
   int j = 1;     /* Inner loop control variable     */
   int count = 10; /* Number of sums to be calculated */

  
   for( i = 1 ; i <= count ; i++ )
   {
     sum = 0L;  /* Initialize sum for the inner loop */

     /* Calculate sum of integers from 1 to i */
     for(j = 1 ; j <= i ; j++ )
       sum += j;
 
     printf("\n%d\t%ld", i, sum); /* Output sum of 1 to i */
   }
}


           
       

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