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ios manipulators internal() function in C++

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  • Last Updated : 02 Sep, 2019

The internal() method of stream manipulators in C++ is used to set the adjustfield format flag for the specified str stream. This flag sets the adjustfield to internal. It means that the number in the output will be padded to the field width by inserting fill characters at a specified internal point.

Syntax:

ios_base& internal (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 internal() function
  
#include <iostream>
  
using namespace std;
  
int main()
{
  
    // Initializing the integer
    double x = -1.23;
  
    cout.precision(5);
  
    // Using internal()
    cout << "internal flag: ";
  
    cout.width(12);
    cout << internal << x << endl;
  
    return 0;
}

Output:

internal flag: -       1.23

Example 2:




// C++ code to demonstrate
// the working of internal() function
  
#include <iostream>
  
using namespace std;
  
int main()
{
  
    // Initializing the integer
    double x = -1.23;
  
    cout.precision(5);
  
    // Using internal()
    cout << "internal flag: ";
  
    cout.width(12);
    cout << internal << x << endl;
  
    return 0;
}

Output:

internal flag: -       1.23

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


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