ios manipulators fixed() function in C++

The fixed() method of stream manipulators in C++ is used to set the floatfield format flag for the specified str stream. This flag sets the floatfield to fixed. It means that the floating-point values will be written in fixed point notations.

Syntax:

ios_base& fixed (ios_base& str)

Parameters: This method accepts str as a parameter which is the stream for which the format flag is affected.

Return Value: This method returns the stream str with internal format flag set.

Example 1:

// C++ code to demonstrate
// the working of fixed() function

#include <iostream>

using namespace std;

int main()
{

    // Initializing the float values
    double x = 1.23;

    cout.precision(5);

    cout << "without fixed flag: "
         << x << endl;

    // Using fixed()
    cout << "with fixed flag: "
         << fixed << x << endl;

    return 0;
}

Output:

without fixed flag: 1.23
with fixed flag: 1.23000

Example 2:

// C++ code to demonstrate
// the working of fixed() function

#include <iostream>

using namespace std;

int main()
{

    // Initializing the float values
    double x = 1.0;

    cout.precision(5);

    cout << "without fixed flag: "
         << x << endl;

    // Using fixed()
    cout << "with fixed flag: "
         << fixed << x << endl;

    return 0;
}

Output:

without fixed flag: 1
with fixed flag: 1.00000

Example 3:

// C++ code to demonstrate
// the working of fixed() function

#include <iostream>

using namespace std;

int main()
{

    // Initializing the float values
    double x = 1.23e9;

    cout.precision(5);

    cout << "without fixed flag: "
         << x << endl;

    // Using fixed()
    cout << "with fixed flag: "
         << fixed << x << endl;

    return 0;
}

Output:

without fixed flag: 1.23e+09
with fixed flag: 1230000000.00000

Reference: http://www.cplusplus.com/reference/ios/fixed/