Reverse a String In-Place

Code

#include <stdio.h>

void reverse_string(char *str) {
    // Your logic here
    int len = 0 ;
    int mid = 0 ;
    char *tmp = str ;
    while(*tmp)
    {
        len++;
        tmp+=1;
    }

    

    mid = len/2 + len%2;

   // printf("%d",mid);

    for(int n = 0 ; n < mid ; n++)
    {
        char l = str[n];
        str[n] = str[len-1-n];
        str[len-1-n] = 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