C++ Operators & Math

Arithmetic and the cmath library.

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C++ has the same operators as C: arithmetic + - * / % ++ --, assignment, comparison and logical operators.

<cmath> provides sqrt(), pow(), round(), ceil(), floor(), abs(); std::max() and std::min() are in <algorithm>.

Key Takeaways: C++ Operators & Math

Mastering C++ Operators & Math helps you write clean and reliable C++ code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

C++ Operators & Math Code Example

C++

#include <iostream>
#include <cmath>
#include <algorithm>

int main() {
    std::cout << 17 / 5 << " " << 17 % 5 << " " << 17 / 5.0 << "\n";
    std::cout << std::sqrt(144) << " " << std::pow(2, 8) << "\n";
    std::cout << std::round(2.5) << " " << std::ceil(2.1) << "\n";
    std::cout << std::max(7, 3) << "\n";
    return 0;
}

Output