Reverse a String In-Place

#include <stdio.h>

void reverse_string(char *str) {
    // Your logic here
    char temp;
    int i =0, j=0;
    while (str[i] != '\0')
    {
            i++;

    }
    i--;
    
    for( j =0;j<=(i/2);j++)
    {
        temp = str[j];
        str[j] = str[i -j];
        str[i - j] = temp;
    }
    str[i+1] = '\0';

}

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;
}