/* Print a sinewave graph */
#include <stdio.h>
#include <math.h>
#define PI 3.14159265358973
#define STEPS 16
#define SIZE 15
int step;
void sineline (void);

main () {
    for (step=0; step<=STEPS; step=step+1) {
        sineline();
    }
}

void sineline (void) {
    float angle;
    int indent;
    angle = (2*PI) * step / STEPS;
    indent = 5.5 + SIZE + SIZE * sin(angle);
    printf ("%*c\n", indent, '*');
}