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 integers 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:

C++

// 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;
}

Output:

showbase flag: 0x32

Example 2:

C++

// 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;
}

Output:

showbase flag: 062

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