C1#include <iostream> 2using namespace std; 3int main(){ 4 float arr1[]={90.5, 20, 60,100, 80, 70}; 5 int a=0; 6 int b=0; 7 for(int i=0;i<6;i++){ 8 if(arr1[i]<=60) a++; 9 if(arr1[i]>=90) b++; 10 } 11 cout<<"成绩小于等于60的人数为:"<<a<<endl<<"成绩大于等于90的人数为:"<<b; 12} 13