/* Program 5-5

   Example of a nested loop */

main ()
 {
  int n, num, count;
  long tri_num;
  for ( count = 1; count <= 5; ++count)
   {
    printf ("What triangular number do you want?\n");
    scanf ("%d", &num);

    tri_num = 0;

    for ( n = 1; n <= num; ++n)
     tri_num = tri_num + n;

     printf ("Triangular number %d is %ld\n\n", num, tri_num);
   }
 }


/* Program Output

What tirangular number do you want?
12
Triangular number of 12 is 78

What tirangular number do you want?
25
Triangular number of 25 is 325

What tirangular number do you want?
50
Triangular number of 50 is 1275

What tirangular number do you want?
75
Triangular number of 75 is 2850

What tirangular number do you want?
83
Triangular number of 83 is 3486

*/