#include<stdio.h>
void main(){
         int a[12]={76,63,54,62,40,75,80,92,77,84,44,73};
         int b[4]={60,70,90,101}
         int c[4]={0}
         int i,j;
         for(i=0;i<12;i++){
                  j=0;
                 while(a[i]>=b[j])j++
                  c[j]++;
          }
          for(i=0;i<4;i++) printf("%d ",c[i]);
          printf("\n");
}
这段c语言是干什么的？