编程菜鸟的日记-初学尝试编程-C++ Primer Plus 第6章编程练习5

#include <iostream>
using namespace std;
const double N1=35000;
const int N2=15000;
const int N3=5000;
int main()
{
	double salary;
	double sui=0;
	cout<<"Enter the salary: ";
	while(cin>>salary && salary>=0)
	{
		if(salary<=N3)
		{
			sui=0;
			//cout<<"税收= "<<sui<<endl;
		}
		else if(salary>N3 && salary<=N2)
		{
			sui=(salary-N3)*0.10+N3*0;
			//cout<<"税收= "<<sui<<endl;
		}
		else if(salary>N2 && salary<=N1)
		{
			sui=(salary-N2)*0.15+(N2-N3)*0.10+N3*0;
			//cout<<"税收= "<<sui<<endl;
		}
		else 
		{
			sui=(salary-N1)*0.20+(N1-N2)*0.15+(N2-N3)*0.10+N3*0;
			//cout<<"税收= "<<sui<<endl;
		}
		cout<<"sui= "<<sui<<endl;
		cout<<"Enter the salary: ";
	}
	system("pause");
	return 0;
}