square_wave.cxx

#include <iostream>
#include <cmath>

int main()
{
    for(auto n = 0; n < 100; ++n)
    {
        float t = float(n) / 100;
        float f = 2.f;
        float a = 4.f * std::floor(t * f) - 2.f * std::floor(2.f * t * f) + 1.f;
        std::cout << t << " : " << a << "\n";
    }
}