// Compile this with:
//   gcc -o math 02-math.c -lm
// then run it:
//   ./math

#include <stdio.h>
#include <math.h>

int main(void)
{
	int i;
	int x;

	printf("hello\n\n");

	/* print the 7-times table */
	for (i = 0; i<13; ++i) {
		int p = 7 * i;
		printf("7 * %d = %d\n", i, p);
	}

	printf("\n");  // a blank line

	/* print a table of the sine function */
	for (x = 0; x <= 360; x += 15) {
		double r = M_PI/180 * x;
		double y = sin(r);
		printf("sin(%d) = %f\n", x, y);
	}

	printf("\n");

	return 0;
}