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

double func(double x) {
    return sin(x);
}

int main(void)
{
    double limit = 1.5;
    double step = 0.5;
    double middle = 0.0;

    for (double t = 0.0; t <= limit; t += step) {
        double x1 = middle - t;
        double x2 = middle + t;
        fprintf(stdout,"| x = %lf | y = %lf | x = %lf | y = %lf |\n",
            x1, func(x1), x2, func(x2));
    }
}