比较大小（C语言编程）

程序代码：
#include<stdio.h>
void main()
{int compare(int x,int y);
int a[3],b[3],i,c,n=0,m=0,k=0;
printf("enter an array a:\n");
for(i=0;i<3;i++)
scanf("%d",&a[i]);
printf("\n");
printf("enter an array b:\n");
for(i=0;i<3;i++);
scanf("%d",&b[i]);
printf("\n");
for(i=0;i<3;i++);
{ c=compare(a[i],b[i]);

if(c==1) n++;
else if(c==0) m++;
else k++;
}
printf("a[i]>b[i] %d times\na[i]=b[i] %d times\na[i]<b[i] %d times\n",n,m,k);
if(n>k) printf("array a is larger than array b\n");
else if(n<k) printf("array a is smaller than array b\n");
else printf("array a is equal to array b\n");
}
compare(int x,int y)
{int flag;
if(x>y) flag=1;
else if(x<y) flag=-1;