第六周项目：深复制体验

代码：

#include<iostream>#include<cstring>using namespace std;class A{private:    char *a;public:    A(char *aa)    {        a = new char[strlen(aa)+1];        strcpy(a, aa);    }    ~A()    {        delete []a;    }    void output()    {        cout<<a<<endl;    }};int main(){    A a("good morning, code monkeys!");    a.output();    A b("good afternoon, codes!");    b.output();    return 0;}

运行结果：

 

为类A增加复制构造函数

代码：

#include<iostream>#include<cstring>using namespace std;class A{private:    char *a;public:    A(char *aa)    {        a = new char[strlen(aa)+1];        strcpy(a,aa);    }    ~A()    {        delete []a;    }    A(A &b)    {        a = new char[strlen(b.a)+1];        strcpy(a,b.a);    }    void output()    {        cout<<a<<endl;    }};int main(){    A a("good morning,code monkeys!");    a.output();    A b(a);    b.output();    return 0;}

运行结果：