Question

How to convert a number from stringstream to string with a setprecision in C++

Answer 1

#include <iostream>
#include <iomanip>
#include <sstream>

int main() {
    float f = 3.141592653589;
    std::stringstream ss;
    
    ss.precision(3);
    ss << f;
    std::string s = ss.str();

    std::cout << s;

    return 0;
}



/*
run:

3.14

*/

 

70+ SQL courses for beginners and professionals