#include <stdio.h>
void main()
 {
   int large(int x,int y);
   int a[10],b[10],i,n=0,m=0,k=0;
   printf("enter array a：\n");
   for(i=0;i<10;i++)
       scanf("%d",&a[i]);
   printf("\n");
   for(i=0;i<10;i++)  
       scanf("%d",&b[i]);
   printf("\n");
   for(i=0;i<10,i++)
      { if(large(a[i],b[i])==1
            n=n+1;
         else
            if(large(a[i],b[i])==0
                  m=m+1;
             else
                k=k+1;
   }
      printf("a[i]>b[j]   %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");
   }
     large(int x,int y)
     {
        int flag;
         if(x>y)
           flag=1;
         else if(x<y)
           flag=-1;
         else flag=0;
         return(flag);
      }
  请问程序中红色加粗的算法是什么意思啊

你说的这个我知道，不过还是谢了。