add.c

/* Adds up 2 integers, not the most exciting thing in the world */
#include <stdio.h>

int
main (int argc, char **argv)
{
	int a, b;

	if (argc != 3)
	{
		printf ("Please input an integer value: ");
		scanf ("%d", &a);

		printf ("Please input an integer value: ");
		scanf ("%d", &b);
	}
	else
	{
		sscanf (argv[1], "%d", &a);
		sscanf (argv[2], "%d", &b);
	}

	printf ("%d + %d = %d\n", a, b, a + b);
	
	return 0;
}