Implement strrev function

#include <stdio.h>
char    *my_strrev(char *str)
{
    int     i;
    int     j;
    char    swap;

    i = 0;
    j = 0;
    while (str[i] != '\0')
        i++;
    i--;
    while (i > j)
    {
        swap = str[i];
        str[i] = str[j];
        str[j] = swap;
        i--;
        j++;
    }
    return (str);
}

int main()
{
    printf("%s\n", my_strrev("hello Sbu!!!"));
    system("pause");
    return 0;
}