ios manipulators showpos() function in C++

The showpos() method of stream manipulators in C++ is used to set the showpos format flag for the specified str stream. This flag always displays the non negative values along with their + sign.

Syntax:

ios_base& showpos (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 showpos format flag set.

Example 1:

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// C++ code to demonstrate
// the working of showpos() function
  
#include <iostream>
  
using namespace std;
  
int main()
{
  
    // Initializing the integers
    int a = 10;
    int b = 0;
  
    // Using showpos()
    cout << "showpos flag: "
         << showpos
         << a << endl
         << b << endl;
  
    return 0;
}

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Output:

showpos flag: +10
+0

Example 2:

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// C++ code to demonstrate
// the working of showpos() function
  
#include <iostream>
  
using namespace std;
  
int main()
{
  
    // Initializing the integers
    int a = -10;
  
    // Using showpos()
    cout << "showpos flag: "
         << showpos
         << a << endl;
  
    return 0;
}

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Output:

showpos flag: -10

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



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