p3_1.cpp

相当丰富的C++源码

/***********************************
*  p3_1.cpp                        *
*  将百分制的成绩按的等级分输出    *
***********************************/
#include<iostream>
using namespace std;
void main()
{
	int n;
	cout<<"Enter the score:";
	cin>>n;
    if (n>=60)
		if (n>=90)
			cout<<"The degree is A"<<endl;
        else if  (n>=80)
            cout<<"The degree is B"<<endl;
        else
              cout<<"The degree is C"<<endl;
    else
        cout<<"The degree is D"<<endl;
}