c++ char to uppercase

To convert a character to uppercase in C++, you can use the toupper() function from the <cctype> header. Here are the steps to convert a char to uppercase:

1. Include the <cctype> header in your program:

#include <cctype>

1. Declare a variable of type char to store the character you want to convert:

char ch = 'a';

1. Use the toupper() function to convert the character to uppercase:

ch = toupper(ch);

The toupper() function takes a character as an argument and returns its uppercase equivalent if it is a lowercase letter. If the character is not a lowercase letter, it returns the same character.

Here is an example that demonstrates the conversion of a char to uppercase:

#include <iostream>
#include <cctype>

int main() {
    char ch = 'a';
    ch = toupper(ch);
    std::cout << "Uppercase: " << ch << std::endl;
    return 0;
}

In this example, the character 'a' is converted to uppercase using the toupper() function, and the result is printed to the console. The output will be:

Uppercase: A