Reverse a String

#include <stdio.h>
#include <string.h>
int main(void) {
    char text[] = "CodeUtility"; size_t length = strlen(text);
    // Swap mirrored characters in place.
    for (size_t i = 0; i < length / 2; ++i) {
        char temporary = text[i]; text[i] = text[length - 1 - i]; text[length - 1 - i] = temporary;
    }
    puts(text);
}

#include <algorithm>
#include <iostream>
#include <string>
int main() {
    std::string text = "CodeUtility";
    // reverse applies swaps across the selected range.
    std::reverse(text.begin(), text.end());
    std::cout << text << '\n';
}