利息计算器

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#include<iostream>
using namespace std;
int main()
{
int  type, days
4000
;
double money, period, rate, interest;
cout << "欢迎使用利息计算器！"<<endl;
cout << "请输入存款金额：";
cin >> money;
cout << "======存款期限======" << endl;
cout << "1. 活期存款" << endl;
cout << "2. 3个月 " << endl;
cout << "3. 6个月" << endl;
cout << "4. 一年 " << endl;
cout << "5. 二年" << endl;
cout << "6. 三年" << endl;
cout << "7. 五年" << endl;
cout << "请输入存款期限的代号：";
cin >> type;
if (type>=1 && type <=7)
{
switch(type)　　//在if中嵌入了switch分情况处理
{
case 1:
cout<<"请输入存款天数：";
cin >> days;
period = days/360.0;
rate = 0.005;
break;
case 2:
period = 0.25;
rate = 0.031;
break;
case 3:
period = 0.5;
rate = 0.033;
break;
case 4:
period = 1;
rate = 0.035;
break;
case 5:
period = 2;
rate = 0.044;
break;
case 6:
period = 3;
rate = 0.05;
break;
case 7:
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;
}