Calculate Personal income Tax! Switch statement

The purpose of the machine: learn to use circular control statements to solve practical problems

On the machine content: Write a multi-branch selection structure program, according to individual monthly income, calculate the tax payable and after-tax income.

/*

* Copyright (c) 2012, Computer College, Yantai University

* All rights reserved.

* Author: Xu Benxi

* Date of Completion: October 27, 2012

* Version Number: v1.0

* Input Description: Total monthly income of individual

* Problem Description: As of September 1, 2011, China's adjusted personal income tax collection method, the starting point is 3500 yuan, the excess part according to the following 7 levels of calculation:

* 1 over 0 to 1500 tax rate 3% calculating quickly deduction number 0

* 2 part of the tax rate of $1500 to 4500 $10% calculating quickly deduction of 105

* 3 part of the tax rate of $4500 to 9000 $20% calculating quickly deduction of 555

* 4 part of the tax rate of $9,000 to 35,000 $25% calculating quickly deduction of 1005

* 5 part of the tax rate of $35,000 to 55,000 $30% calculating quickly deduction of 2755

* 6 part of the tax rate of $55,000 to 80,000 $35% calculating quickly deduction of 5505

* 7 more than 80,000 of the tax rate 45% calculating quickly deduction 13505

* Personal Income tax = (total income-3500)

* Tax rate-calculating quickly deduction number

* Program output: Tax payable and after-tax income (required to complete the program design with a nested IF statement)

* Problem Analysis:

* Algorithm Design:

#include <iostream> using namespace std;
	int main () {double dsalary,dtax,dnetincome,dvalue,drate, doffset;//salary, payment amount, after-tax surplus, taxable amount, tax rate, count deduction. int istep;
		Tax Grade cout<< "Please input the total revenue of this month (yuan):";
		cin>>dsalary;
		dvalue=dsalary-3500;
		if (dvalue<=0) cout<< "dtax=0 yuan";
		else {if (dvalue<=1500) istep=1;
		else if (dvalue<=4500) istep=2;
		else if (dvalue<=9000) istep=3;
		else if (dvalue<=35000) istep=4;
		else if (dvalue<=55000) istep=5;
		else if (dvalue<=80000) istep=6;
		else if (dvalue>80000) istep=7;
		Switch (istep) {case 1:drate=0.03,doffset=0;break;
		Case 2:drate=0.1,doffset=105;break;
		Case 3:drate=0.2,doffset=555;break;
		Case 4:drate=0.25,doffset=1005;break;
		Case 5:drate=0.3,doffset=2755;break;
		Case 6:drate=0.35,doffset=5505;break;
		Case 7:drate=0.45,doffset=13505;break;}
		Dtax=drate*dvalue-doffset;
		Dnetincome=dsalary-dtax;
		cout<< "Taxable" <<dTax<< "Yuan" <<endl; cout<< "remaining after tax" <<dnetincome<< "Yuan" <<endl;
return 0;

	
 }

Run Result:

Experience: Practice using Switch statements