创建字符串的副本，但在C中颠倒

#include <stdio.h>
#include <string.h>

char* reverseString(const char* str) {
    int length = strlen(str);
    char* reversed = (char*)malloc((length + 1) * sizeof(char));

    for (int i = length - 1; i >= 0; i--) {
        reversed[length - 1 - i] = str[i];
    }

    reversed[length] = '\0';

    return reversed;
}

int main() {
    const char* original = "Hello, World!";
    char* reversed = reverseString(original);

    printf("Original: %s\n", original);
    printf("Reversed: %s\n", reversed);

    free(reversed);

    return 0;
}