Copy Constructors

CS202 Copy Constructors

6

Copy Constructors

//name.h interface

class name {

public:

name(char* = ""); //default constructor

name(const name &); //copy constructor

~name(); //destructor

name &operator=(name &); //assignment op

private:

char* ptr; //pointer to name

int length; //length of name including nul char

};

#include "name.h" //name.c implementation

name::name(char* name_ptr) { //constructor

length = strlen(name_ptr); //get name length

ptr = new char[length+1]; //dynamically allocate

strcpy(ptr, name_ptr); //copy name into new space

}

name::name(const name &obj) { //copy constructor

length = obj.length; //get length

ptr = new char[length+1]; //dynamically allocate

strcpy(ptr, obj.ptr); //copy name into new space

}

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