Using the Precision Function to Work with the showpoint Format Flag in cout - C++ File Stream

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Description

Using the Precision Function to Work with the showpoint Format Flag in cout

Demo Code

#include <iostream>

using namespace std;

int main()//from w  w w.j  a  v a  2  s  . co m
{
    int i;
    cout.setf(ios_base::showpoint);
    cout.precision(4);
    for (i=1; i<=10; i++) {
        cout << 1.0 / i << endl;
    }
    cout << 2.0 << endl;
    cout << 12.0 << endl;
    cout << 12.5 << endl;
    cout << 123.5 << endl;
    cout << 1234.9 << endl;
    cout << 12348.8 << endl;
    cout << 123411.5 << endl;
    cout << 1234111.5 << endl;
    return 0;
}

Result


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