C primer plus plus 模板类

//

//  main.cpp

//  pointer3

//

//  Created by 炒饭 on 2019/4/14.

//  Copyright © 2019 炒饭. All rights reserved.

//

 

#include <iostream>

#include <cstring>

#include <vector>

#include <array>

using namespace std;

char * getname(void);

int main()

{

    // insert code here...

    char *name;

    

    name = getname();

    cout <<name << " at "<< (int *) name << "\n";

    delete [] name ;

    name=getname();

    cout << name << "at "<< (int *) name<< "\n";

    delete [] name;

    std::cout << "Hello, World!\n";

    

    //模版类

    double al[4] = {1.2,2.3,3.4,4.5};

    vector<double> a2(4);

    a2[0] = 1.0/3.0;

    a2[1] = 1.0/5.0;

    a2[2] = 1.0/7.0;

    a2[3] = 1.0/9.0;

    

    array<double ,4> a3 ={3.14,2.34,1.67,1.41};

    array<double,4> a4;

    a4=a3;

    

    return 0;

}

 

char *getname()

{

    char temp[80];

    cout << "enter last name : ";

    cin >> temp;

    char * pn = new char[strlen(temp) +1];

    strcpy(pn,temp);

    return pn;

    

}

实验结果：

enter last name : zhou

zhou at 0x1005041a0

enter last name : jian

jianat 0x100777200

Hello, World!

Program ended with exit code: 0