Question

I have a float number and I want to print one digit after decimal. How can I do this using cout? I have tried the following code but its giving wrong display.

#include <iostream>

using namespace std;

int main()
{
    float time = 2.2;
    cout.precision(1);
    cout << time << endl;

    return 0;
}

Answer 1

You need to set tge precision to one and float formatting flags to fixed:

std::cout << std::fixed << std::setprecision(1);

BTW, don’t use std::endl. To get a newline use '\n' and if you really mean to flush the stream use std::flush.