Reverse an Array or String

1#include <stdio.h>
2#include <string.h>
3
4int main() {
5    char str[100];
6    
7    printf("Enter a string: ");
8    scanf("%99s", str);
9    
10    int len = strlen(str);
11    
12    // Reverse using swap
13    for (int i = 0; i < len / 2; i++) {
14        char temp = str[i];
15        str[i] = str[len - 1 - i];
16        str[len - 1 - i] = temp;
17    }
18    
19    printf("Reversed: %s\n", str);
20    return 0;
21}