Reverse a String In-Place

Code

#include <stdio.h>

void reverse_string(char *str) {
    // Your logic here
    __uint8_t n = 0;
    char *st = str;
    while (*str)
    {
        ++n;
        ++str;
    }
    --str;
    n = n/2;
    while (n--)
    {
        char tm = *(st);
        *st = *str;
        *str = tm;

        ++st;
        --str;
    }
    
    
}

int main() {
    char str[101];
    fgets(str, sizeof(str), stdin);

    // Remove newline
    int i = 0;
    while (str[i] != '\0') {
        if (str[i] == '\n') {
            str[i] = '\0';
            break;
        }
        i++;
    }

    reverse_string(str);
    printf("%s", str);
    return 0;
}

Solving Approach