Reverse a String In-Place

Code

#include <stdio.h>

void reverse_string(char *str) {
    // Your logic here
    int L = 0;
    int R = 0;
    while(str[R] != '\0'){
        R++;
    }
    R--;

    char temp = 'a';
    while(L < R){
        temp = str[L];
        str[L] = str[R];
        str[R] = temp;
        R--;
        L++;
    }
}

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