Reverse a String In-Place

#include <stdio.h>
#include <string.h>
void swap(char *a,char*b)
{
    *a ^= *b;
    *b ^= *a;
    *a ^= *b;
}

void reverse_string(char *str) {
    // Your logic here
    int left= 0,right = strlen(str) - 1;
    while(left < right)
    {
        swap(&str[left],&str[right]);
        left++;
        right--;
    }
}

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;
}