문자열 사전찾기식 정렬 소스인데요

비교인자를 함수로 쓰면 안되는 이유가 먼가요?

밑에 쓴건 인트형 변수를 비교인자로 써서 정상 실행되는 

소스입니다만



#include <stdio.h>

int Compare ( char hana [ ], char dul [ ] )
{
        int i;

        for ( i = 0 ;  ; i ++ )
        {
                if ( hana [ i ] == \'\\0\' && dul [ i ] == \'\\0\' )
                        return 0;

                if ( hana [ i ] == \'\\0\' && dul [ i ] != \'\\0\' )
                        return -2;

                if ( hana [ i ] != \'\\0\' && dul [ i ] == \'\\0\' )
                        return +2;

                if ( hana [ i ] < dul [ i ] )
                        return -1;
                
                if ( hana [ i ] > dul [ i ] )
                        return +1;

                
        }
}



int main(void)
{

        char str5 [20];
        char str6 [20];

        int x;

        for ( ; ; )
        {
                printf (\"Enter a word > (order) \");
                scanf (\"%s\", str5);

                printf (\"Enter a another word > (order) \");
                scanf (\"%s\", str6);

                x = Compare (str5, str6);

                if ( x <= 0 )
                        printf (\"%s, %s \\n\\n\", str5, str6);
                else if ( x > 0 )
                        printf (\"%s, %s \\n\\n\", str6, str5);                
        
        }

        return 0;
}