利息计算器

/*
*Copyright (c) 2013 ,烟台大学计算机学院
*All rights reserved.
*作者：张凤宁
*完成日期：2013年12月14
*版本号：v1.0
*问题描述：
*样例输出：
*问题分析：用简单的方法，学会活学活用
*/
#include<iostream>
using namespace std;
int main()
{
    int  type, days;
    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)
        {
        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;
}
运行结果：

心得体会：很有趣。