ex.5.9.3.c

// Program to generate a table of triangular numbers

#include <stdio.h>

int main (void)
{
	int n, triangularNumber;

	printf ("TABLE OF TRIANGULAR NUMBERS\n\n");
	printf (" n    Sum from 1 to n\n");
	printf ("---   ---------------\n");

	triangularNumber = 0;

	n = 1;
	while ( n <= 10 ) {
		triangularNumber += n;
		printf ("%2i          %i\n", n, triangularNumber);
		++n;
	}

	return 0;
}