int isafter(char char1, char char2)
{
    if(char1 == char2){return 0;}
    if(char1<char2){return -1;}
    if(char1>char2){return 1;}
}


int isBefore(char* s1, char* s2){
    int i=0;
    while(s1[i] != '\0' && s2[i] != '\0')
    {
        if(isafter(s1[i],s2[i]==-1))
        {
            return 1;
        }
        if(isafter(s1[i],s2[i]==1))
        {
            return 0;
        }
    }
}