# include <stdio.h>

//
//  Program 5.2, Stephen Kochan, Programming in C.
//

int main ( void )
{
  int n, triangularNumber;

  triangularNumber = 0;

  for ( n = 1; n <= 200; n = n + 1 )
  {
    triangularNumber = triangularNumber + n;
  }

  printf ( "The 200th triangular number is %i.\n", triangularNumber );

  return 0;
}