ios manipulators showbase() function in C++

The showbase() method of stream manipulators in C++ is used to set the showbase format flag for the specified str stream. This flag displays the nitegers along with their base prefixes.

Syntax:

ios_base& showbase (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 showbase format flag set.

Example 1:

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// C++ code to demonstrate
// the working of showbase() function
  
#include <iostream>
  
using namespace std;
  
int main()
{
  
    // Initializing the integer
    int num = 50;
  
    // Using showbase()
    cout << "showbase flag: "
         << hex
         << showbase
         << num << endl;
  
    return 0;
}

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Output:

showbase flag: 0x32

Example 2:

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// C++ code to demonstrate
// the working of showbase() function
  
#include <iostream>
  
using namespace std;
  
int main()
{
  
    // Initializing the integer
    int num = 50;
  
    // Using showbase()
    cout << "showbase flag: "
         << oct
         << showbase
         << num << endl;
  
    return 0;
}

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Output:

showbase flag: 062

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

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