ios manipulators uppercase() function in C++

The uppercase() method of stream manipulators in C++ is used to set the uppercase format flag for the specified str stream. This flag makes the output operations to use capital letters instead of lowercase letters.

Syntax:

ios_base& uppercase (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 uppercase format flag set.

Example 1:

// C++ code to demonstrate
// the working of uppercase() function

#include <iostream>
#include <sstream>

using namespace std;

int main()
{

    // Initializing the int
    int n = 20;

    // Using uppercase()
    cout << "uppercase flag: "
         << showbase << oct
         << uppercase
         << n << endl;

    return 0;
}

Output:

uppercase flag: 024

Example 2:

// C++ code to demonstrate
// the working of uppercase() function

#include <iostream>

using namespace std;

int main()
{

    // Initializing the int
    int n = 20;

    // Using uppercase()
    cout << "uppercase flag: "
         << showbase << hex
         << uppercase
         << n << endl;

    return 0;
}

Output:

uppercase flag: 0X14

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