/*
 * Program to calculate the 200th triangular number.
 * Introduction to For Loops.
 */

#include <stdio.h>

int main (void){
	
	int n, triNum = 0;
	
	for (n=1 ; n<=200 ; n++)
		triNum = triNum+n;
	
	printf("The 200th triangular number is %i\n",triNum);
	
	return 0;
}