int main(int argc, char **argv) {
    // TODO: Verify that command line arguments are valid.
       if(argc!=2) return 2;

    // TODO: Parse arguments and then call the two helpers in sin_helpers.c
    // to verify the SIN given as a command line argument.
        else {
                int sin=0;
                int *sin_array=(int*)malloc(sizeof(int)*9);
                for(int i=0;i<9;i++){
                        sin=sin*10+*argv[i]-'0';
                }
                if(populate_array(sin,sin_array)==1){
                        return 1;
                }
                if(check_sin(sin_array)!=0){
                        return 1;
                }
        }

    return 0;
}
