C++ Print Double With 2 Decimal Places Code Example

Example 1: how to specify how many decimal to print out with std::cout

#include <iostream> #include <iomanip>  int main() {     double d = 122.345;     std::cout << std::fixed << std::setprecision(2) << d; }  //result that get print out: 122.34

Example 2: how to format decimal palces in c++

std::cout << std::setprecision(2) << std::fixed; // where the 2 is how many decimal places you want // note you need to <iomanip>