d most used references

#include <iostream>
#include <cmath>


int main()
{
    std::cout<<"ceil(5.33) = " << std::ceil(5.33) << "\n";
    std::cout << "ceil(-5.33) = " << std::ceil(-5.33) << "\n";
    std::cout<<"floor (4.4) = " <<std::floor (4.4)<<"\n";
    std::cout << "fmod(18.5, 4.2) = " << std::fmod(18.5, 4.2) << "\n";
    std::cout << "abs(-55.34) = " << std::abs(-55.34) << "\n";
    std::cout << "abs(78) = " << std::abs(78) << "\n";
    std::cout << "fabs(-3.14) = " << std::fabs(-3.14) << "\n";
    std::cout << "pow(3, 4) = " << std::pow(3,4) << "\n";
    std::cout << "pow(32, 1/5) = " << std::pow(32,1.0/5) << "\n";
    std::cout << "pow(-1, 11) = " << std::pow(-1,11) << "\n";
    std::cout << "sqrt(225) = " << std::sqrt(225) << "\n";
    std::cout << "exp(2) == e^2 = " << std::exp(2) << "\n";
    std::cout << "exp(1.0/2) == koren(e) = " << std::exp(1.0/2) << "\n";
    std::cout << "log(2.71) = " << std::log(2.71) << "\n";
    std::cout << "log10(1000) = " << std::log10(1000) << "\n";

    const double e = std::exp(1);
    std::cout << "log(e) = " << std::log(e) << "\n";
    const double PI = 3.14159265;
    std::cout << "sin(30 stepeni) = " << std::sin(30 * PI/180) << "\n";
    std::cout << "cos(PI radijani) = " << std::cos(PI) << "\n";
    std::cout << "tan(45 stepeni) = " << std::tan(45 * PI/180) << "\n";
    std::cout << "acos(sqrt(3)/2) = " << std::acos(std::sqrt(3)/2) * 180 / PI << " stepeni\n";
    std::cout << "acos(-1) = " << std::acos(-1) << " radijani\n";
    std::cout << "atan(-1) = " << std::atan(-1) * 180 / PI<< " stepeni\n";
    std::cout << "atan(sqrt(3)) = " << std::atan(std::sqrt(3)) << " radijani\n";
    return 0;
}