实验二

#include<iostream>
using namespace std;
struct Complex{
    double real;
    double imaginary;
}; 
int add(int,int);
double add(double,double);
Complex add(Complex,Complex);
int main(){
   int a,b;
   cout<<"enter two integer:";
   cin>>a>>b;
   cout<<"their sum:"<<add(a,b)<<endl;    
      
   double c,d;
   cout<<"enter two real number:";
   cin>>c>>d;
   cout<<"their sum:"<<add(c,d)<<endl;
   
   Complex e,f;
   char m,n,y,g;
   cout<<"enter two complex:";
   cin>>e.real>>m>>e.imaginary>>n>>f.real>>y>>f.imaginary>>g;
   add(e,f);
   
    return 0;
}
int add(int a,int b){
    return a+b;
}
double add(double a,double b){
    return a+b;
}
Complex add(Complex a,Complex b){
    cout<<"their sum:"<<a.real+b.real<<‘+‘<<a.imaginary+b.imaginary<<‘i‘;
}

#ifndef QUICKSORT_H
#define QUICKSORT_H

template<class T>
void Qsort(T a[],int low,int high)
{if(low>=high)
   return ;
 int fleft=low,fright=high;
 T flagn=a[low];
 while(fleft<fright)
      {while(fleft<fright&&a[fright]>=flagn) fright--;
       a[fleft]=a[fright];
       while(fleft<fright&&a[fleft]<=flagn) fleft++;
       a[fright]=a[fleft];
      }//结束时左右指针指在同一空位 
 a[fleft]=flagn;
 Qsort(a,low,fleft-1);
 Qsort(a,fleft+1,high);//递归直到子序列的Low和high相等 
}

template<class T>
Quicksort(T a[],int n)
{Qsort(a,0,n-1);
}

#endif

#ifndef OUTPUT_H
#define OUTPUT_H
#include<iostream>
using namespace std;

template<class T>
Output(T a,int n)
{int i;
 for(i=0;i<=n-1;i++)
   cout<<a[i]<<"  ";
} 

#endif 

#include<iostream>
#include"quicksort.h"
#include"output.h"
using namespace std;

int main()
{int a[5]={3,1,4,8,2};
 double b[10]={1.1,3.5,2.2,3.1,6.4,5.9,5.1,6.9,7.1,8.8};
 
 Quicksort(a,5);
 Output(a,5);
 cout<<endl;
 
 Quicksort(b,10);
 Output(b,10);
 cout<<endl;
 
 return 0;
}

#include <iostream>
#include <string>
using namespace std;
// User类的声明
class User {
     public:
            void setInfo(string name0="",string passwd0="111111",string email0=" ");
            // 声明带有默认形参值的成员函数setInfo()
            //密码默认值为6个1
            // 邮箱默认值为空串
            void changePasswd();
            void printInfo();
     private:
            string name;
            string passwd;
            string email;
};
// User类的实现
// 成员函数setInfo()的实现
// 功能：设置用户名(name), 密码(passwd), 联系邮箱(email)
void User::setInfo(string name0,string passwd0,string email0)
{name=name0;
 passwd=passwd0;
 email=email0;
}
// 成员函数changePasswd()的实现
// 功能：修改密码
// 要求：在修改密码前，要求先输入旧密码，验证无误后，才允许修改。
// 如果输入旧密码时，连续三次输入错误，则提示用户稍后再试，暂时退出修改密码程序。
void User::changePasswd()
{string oldpasswd;
 int n=0;
 cout<<"please enter old passwword:";
 cin>>oldpasswd;
 n++;
 while(oldpasswd!=passwd&&n<=2)
      {cout<<"passwd input error,Please re-Enter again:";
       cin>>oldpasswd;
       n++;
      }
 if(oldpasswd==passwd)
   {cout<<"please enter new passward: ";
    cin>>passwd;
   }
  else if(n=3)
        cout<<"Please try after a while."<<endl;
}
// 成员函数printInfo()的实现
// 功能：打印用户信息
// 要求： 密码以6个*显示
void User::printInfo()
{cout<<"name:"<<name<<endl;
 cout<<"paassward:******"<<endl;
 cout<<"email:"<<email<<endl;
}
// 在主函数中测试User类
// 用User类创建对象，测试类的功能
int main() {
cout << "testing 1......" << endl;
// 测试1
User user1;
user1.setInfo("Leonard");
user1.printInfo();
user1.changePasswd();
user1.printInfo();
cout << endl << "testing 2......" << endl << endl;
// 测试2
User user2;
user2.setInfo("Jonny","92197","xyz@hotmail.com");
user2.printInfo();
return 0;
}