C++作业3

最新推荐文章于 2024-09-21 17:49:12 发布

zoupenghui

最新推荐文章于 2024-09-21 17:49:12 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/zoupenghui/article/details/51125575

本文包含三个实用的C++程序：判断特定月份天数的小工具、定期存款利息计算器和个人所得税计算器，帮助用户轻松完成日常计算任务。

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一、本月有几天

#include <iostream>  
using namespace std;  
int main ()  
{  
    int year,month;    
    cout<<"请输入年份:"<<endl;  
    cin>>year;  
    cout<<"请输入月份:"<<endl;  
    cin>>month;  
    if((year%4==0  &&  year%100!=0)||(year%400==0))  
    {  
        if(month==2)  
            cout<<"本月有29天";  
        if(month==1 || month==3 || month==5 || month==7 || month==8 || month==10 || month==12)  
            cout<<"本月有31天";  
        if(month==4 || month==6 || month==9 || month==11)  
            cout<<"本月有30天";  
    }  
    else  
    {  
        if(month==2)  
            cout<<"本月有28天";  
        if(month==1 || month==3 || month==5 || month==7 || month==8 || month==10 || month==12)  
            cout<<"本月有31天";  
        if(month==4 || month==6 || month==9 || month==11)  
            cout<<"本月有30天";  
    }  
    return 0;  
}

二、定期存款利息计算器

#include<iostream>  
using namespace std;
int main()
{
    int  type;
    double money, period, rate, interest;
    cout << "请输入存款金额：";
    cin >> money;
    cout << "存款期限" << endl;
    cout << "1. 三个月 " << endl;
    cout << "2. 六个月" << endl;
    cout << "3. 一年 " << endl;
    cout << "4. 二年" << endl;
    cout << "5. 三年" << endl;
    cout << "6. 五年" << endl;
    cout << "请输入存款期限的代号：";
    cin >> type;
    if (type >= 1 && type <= 6)
    {
        switch (type)   
        {
            case 1:
                period = 0.25;
                rate = 0.031;
                break;
            case 2:
                period = 0.5;
                rate = 0.033;
                break;
            case 3:
                period = 1;
                rate = 0.035;
                break;
            case 4:
                period = 2;
                rate = 0.044;
                break;
            case 5:
                period = 3;
                rate = 0.05;
                break;
            case 6:
                period = 5;
                rate = 0.055;
                break;
		}
        interest = money * period * rate;
        cout << "到期利息为：" << interest << "元，本息合计共" << interest + money << "元。" << endl;
    }
    else
        cout << "选择存款类型错误！" << endl;
    cout << "感谢您的使用，欢迎下次光临！" << endl;
    return 0;
}

三、个人所得税计算器

#include <iostream>     
using namespace std;  
int main( )  
{  
    double dSalary,dTax=0,dNetIncome=0;   
    cout<<"请输入您本月的收入总额（元）：";  
    cin>>dSalary;  
    double Spare,TaxRate;  
    int deduction;   
    Spare=dSalary-3500;  
    if(Spare>0)  
    {  
        if(Spare<=1500) TaxRate=0.03,deduction=0;  
        else if(Spare<=4500) TaxRate=0.10,deduction=105;  
        else if(Spare<=9000) TaxRate=0.20,deduction=555;  
        else if(Spare<=35000) TaxRate=0.25,deduction=1005;  
        else if(Spare<=55000) TaxRate=0.30,deduction=2755;  
        else if(Spare<=80000) TaxRate=0.35,deduction=5505;  
        else   TaxRate=0.45,deduction=13505;  
    }  
    else   
    {  
        TaxRate=0;  
        deduction=0;  
    }  
    dTax=Spare*TaxRate-deduction;  
    dNetIncome=dSalary-dTax;  
    cout<<"您本月应缴个人所得税 "<<dTax<<" 元，税后收入是 "<<dNetIncome<<" 元。\n";  
    cout<<"依法纳税，共享繁荣。谢谢使用！\n";  
    return 0;  
}