C++作业3

来源：互联网发布：2016网络作家排名编辑：程序博客网时间：2024/04/30 11:11

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;  }

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