calcclass.cpp

计算个人所得税的代码5522197 5522197 5522197 5522197

#include "calcclass.h"

//个人所得税计算类实现部分
calc::calc()
{
}
calc::~calc()
{
}
double calc::calctax(bool judgement,double calcmoney)
{	
	double currenttax;
	if (judgement==0)							//判断是何种收入(0=pay,1=income)
		currenttax=calcpay(calcmoney);
	if (judgement==1)
		currenttax=calcincome(calcmoney);
	return currenttax;
}
double calc::calcpay(double moneytax)			//CalcPay 计算工资，薪金所得税
{
	double currenttax=0;						//应缴税：currenttax
	moneytax-=800;
	if (moneytax<=0)							//判断是否要缴税
		currenttax=-1;
	if (moneytax<=500) 
		currenttax=moneytax*0.05;
	else if (moneytax<=2000)
		currenttax=500*0.05+(moneytax-500)*0.1;
	else if (moneytax<=5000)
		currenttax=500*0.05+1500*0.1+(moneytax-2000)*0.15;
	else if (moneytax<=20000)
		currenttax=500*0.05+1500*0.1+3000*0.15+(moneytax-5000)*0.2;
	else if (moneytax<=40000)
		currenttax=500*0.05+1500*0.1+3000*0.15+15000*0.2+(moneytax-20000)*0.25;
	else if (moneytax<=60000)
		currenttax=500*0.05+1500*0.1+3000*0.15+15000*0.2+20000*0.25+(moneytax-40000)*0.3;
	else if (moneytax<=80000)
		currenttax=500*0.05+1500*0.1+3000*0.15+15000*0.2+20000*0.2+20000*0.35+(moneytax-60000)*0.35;
	else if (moneytax<=100000)
		currenttax=500*0.05+1500*0.1+3000*0.15+15000*0.2+20000*0.2+20000*0.25+20000*0.35+(moneytax-80000)*0.4;
	else if (moneytax>=100000)
		currenttax=500*0.05+1500*0.1+3000*0.15+15000*0.2+20000*0.2+20000*0.25+20000*0.35+20000*0.4+(moneytax-100000)*0.45;
	if (currenttax<=0)							//如果意外出错则为-2
		currenttax=-2;
	return currenttax;
}
double calc::calcincome(double moneytax)		//CalcIncome 计算一次性劳动所得税
{	
	double currenttax;							//应缴税：currenttax
	if (moneytax<=0)							//判断是否要缴税
		currenttax=-1;
	if (moneytax<=4000)
		moneytax-=800;
	else moneytax=moneytax-moneytax*0.2;
	if (moneytax<=20000)
		currenttax=moneytax*0.2;
	else if (moneytax<=50000)
		currenttax=20000*0.2+(moneytax-20000)*0.3;
	else if (moneytax>=50000)
		currenttax=20000*0.2+30000*0.3+(moneytax-50000)*0.4;
	if (currenttax<=0)							//如果意外出错则为-2
		currenttax=-2;
	return currenttax;
}