Reverse a String In-Place

Code

#include <stdio.h>

void reverse_string(char *str) {
    // Your logic here
    int len_str = 0;
    int i = 0;
    while(str[i] != '\0')
    {
        i++;
        len_str++;
    }
    char temp = 0;
    for(int j = 0; j < len_str/2; j++)
    {
        temp = str[j];
        str[j] = str[len_str - j-1] ;
        str[len_str - j-1] = temp;
    }
}

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