ex.5.9.2.c

/* Program to calculate the 200th triangular number
   Introduction of the for statement                 */

#include <stdio.h>

int main (void)
{
	int n, triangularNumber;

	triangularNumber = 0;

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

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

	return 0;
}