Printing the correct number of decimal points with cout

Question

I have a list of float values and I want to print them with cout with 2 decimal places.

For example:

10.900  should be prin         


        

Answer 1

To set fixed 2 digits after the decimal point use these first:

cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(2);

Then print your double values.

This is an example:

#include 
using std::cout;
using std::ios;
using std::endl;

int main(int argc, char *argv[]) {
    cout.setf(ios::fixed);
    cout.setf(ios::showpoint);
    cout.precision(2);
    double d = 10.90;
    cout << d << endl;
    return 0;
}