How do you capitalize a single letter in an Array of char in C++?

Question

How do you capitalize a single letter inside an array of char in C++?

Example:

char *myArray[]={“hello world”};

And capitalize only the randomly selected “h” or “o” etc?

Basically how can C++ recognizes a character and know it’s capital form?

Do I save the capital letter for ever small letter ex: if char letter == ‘a’ then cout “A” or ‘b’ then cout “B”....?

Will this work? And is there any other way?

Answer 1

#include <iostream>
#include <cctype>

int main()
{
char myArray[]={"hello world"};

char letter = toupper(myArray[0]);
std::cout << letter;
}

Answer 2

you can check with condition:
if(c >= 'a' && c <= 'z')
// c is small letter
if(c >= 'A' && c <= 'Z')
// c is capital letter