d5z54.cpp

把学生按照成绩分类

#include<iostream.h>

int& level(int grade,int& typeA,int& typeB,int& typeC);
void main()
{
	int typeA=0,typeB=0,typeC=0;
	int student=9;
	int array[9]={90,75,86,66,58,40,80,85,71};
	for (int i=0;i<student;i++)
		level(array[i],typeA,typeB,typeC)++;
	cout<<"A类学生数："<<typeA<<endl;
	cout<<"B类学生数："<<typeB<<endl;
	cout<<"C类学生数："<<typeC<<endl;
}

int& level(int grade,int& typeA,int& typeB,int& typeC)
{
	if (grade>=80)return typeA;
    else if(grade>=60)return typeB;
       	else return typeC;
}