Reverse a String In-Place

Code

#include <stdio.h>
#include<string.h>
void reverse_string(char *str) {
    // Your logic here
   int l=0,r=0;
   while(str[r])
   {
       r++;
   }
   r--;
   while(l<r)
   {
       char temp=str[l];
       str[l]=str[r];
       str[r]=temp;
       l++;
       r--;
       }
}

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