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ios manipulators fixed() function in C++
  • Last Updated : 02 Sep, 2019

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/

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