#include<stdio.h>
void main(){
        int a[9]={36,25,48,24,55,40,18,66,20};
        int i,b1,b2;
        a[0]<=a[1]? (b1=a[0],b2=a[1]):(b1=a[1],b2=a[0]);
        for(i=2;i<9;i++)
                      if(a[i]<b1) {b2=b1;b1=a[i];}
                      else if(a[i]<b2)   b2=a[i];
       printf("%d  %d\n",b1,b2);
}
还有里面的a[i]是什么