第9周 利息计算系统！

#include<iostream>using namespace std; int main()  {  int  type, days; double money, period, rate, interest; //“period”？往下看就了然了！cout <<endl;cout << "  ========欢迎使用利息计算系统！========= " << endl << endl;cout << "        请选择下列业务的相应代号" <<endl;    cout << "  =======================================" << endl;cout << "                1.活期储蓄" << endl;cout << "                2.三个月" << endl;cout << "                3.六个月" << endl;cout << "                4.一年" << endl;cout << "                5.二年" << endl;cout << "                6.三年" << endl;cout << "                7.五年" << endl;cout << "  =======================================" << endl << endl;cout <<"  您选择的业务代号为：";    cin >> type ;    if (type>=1 && type <=7) {   switch(type)   {          case 1:   cout << "  请输入存款天数：";                  cin >> days;                  rate = 0.005;                   period = days /360.0; //豁然开朗！此处的“period”用得相当高明啊。解决了我很苦恼的一个问题。跪了！                                    break;            case 2:   rate = 0.031;  period = 0.25;  break;          case 3:   rate = 0.033;                  period = 0.50;  break;          case 4:   rate = 0.035;  period = 1.0;  break;          case 5:   rate = 0.044;  period = 2.0;  break;          case 6:   rate = 0.050;  period = 3.0;  break;          case 7:   rate = 0.055;           period = 5.0;  break;   }       cout << "  请输入您的存款金额：￥";   cin >> money ;       interest = money * rate * period;   cout << "  您的利息为：￥"<< interest << "本息合计￥" << interest+money <<endl;   cout << "  谢谢您的使用，欢迎下次光临！"<<endl;   }    else          cout << "  你选择的业务代号有误，请确认后再次输入。"<<endl; //其实再输入就木有了。。  return 0;  }  

运行结果：

心得体会：

说实话，编程序的这个把月以来，以这次编的最有成就感。