老谢博客

#include<iostream>
#include<math.h>
using namespace std;
int main()
{
	int a,m,Max,Min=100,count=0;
	double Sum=0.0,Avg=0.0;
	cin>>a;
 
    while(1)
	{
		cin>>m;
		cout<<m;
 
			if(	m<60)
			    cout<<":E;"<<endl;
			else if((m>=60) && (m<70))
				cout<<":D;";
		    else if((m>=70) && (m<80))
			    cout<<":C;";
		    else if((m>=80) && (m<90))
			    cout<<":B;";
		    else
				cout<<":A;";
 
		        if(Max<m)
				Max=m;
		    	if(Min>m)
				Min=m;
 
			Sum=Sum+m;
 
			count++;
 
			if(count==a)
				break;
 
	}
 
	Avg=Sum/a;
	cout<<"Avg:"<<Avg<<",Sum:"<<Sum<<",Max:"<<Max<<",Min:"<<Min<<endl;
 
	return 0;	
}