CPP41. 浅拷贝和深拷贝
描述
现有一个 Person 类,成员变量：姓名（string name）和年龄（int age）,请给 Person 添加一个拷贝构造函数，让程序能够正确运行。输入描述
键盘输入用户名和年龄输出描述
通过 Person 类的showPerson()成员方法输出 Person 对象的姓名和年龄，中间使用空格隔开示例1
输入:
zhangsan 20
输出:
zhangsan 20
C++ 解法, 执行用时: 2ms, 内存消耗: 384KB, 提交时间: 2022-07-23
#include <iostream>
#include <cstring>
#pragma warning(disable : 4996)
using namespace std;
class Person {
public:
char* name; // 姓名
int age; // 年龄
Person(const char* name, int age) {
this->name = new char[strlen(name) + 1];
strcpy(this->name, name);
this->age = age;
}
Person(Person &p)
{
this->name=new char[strlen(name)+1];
strcpy(this->name,p.name);
this->age=p.age;
}
// write your code here......
void showPerson() {
cout << name << " " << age << endl;
}
~Person() {
if (name != nullptr) {
delete[] name;
name = nullptr;
}
}
};
int main() {
char name[100] = { 0 };
int age;
cin >> name;
cin >> age;
Person p1(name, age);
Person p2 = p1;
p2.showPerson();
return 0;
}
C++ 解法, 执行用时: 2ms, 内存消耗: 384KB, 提交时间: 2021-12-31
#include <iostream>
#include <cstring>
#pragma warning(disable : 4996)
using namespace std;
class Person {
public:
char* name; // 姓名
int age; // 年龄
Person(const char* name, int age) {
this->name = new char[strlen(name) + 1];
strcpy(this->name, name);
this->age = age;
}
// write your code here......
Person(const Person&p){
this->name=new char[strlen(p.name)+1];
strcpy(this->name,p.name);
this->age=p.age;
}
void showPerson() {
cout << name << " " << age << endl;
}
~Person() {
if (name != nullptr) {
delete[] name;
name = nullptr;
}
}
};
int main() {
char name[100] = { 0 };
int age;
cin >> name;
cin >> age;
Person p1(name, age);
Person p2 (p1);
p2.showPerson();
return 0;
}
C++ 解法, 执行用时: 2ms, 内存消耗: 388KB, 提交时间: 2021-12-24
#include <iostream>
#include <cstring>
#pragma warning(disable : 4996)
using namespace std;
class Person {
public:
char* name; // 姓名
int age; // 年龄
Person(const char* name, int age) {
this->name = new char[strlen(name) + 1];
strcpy(this->name, name);
this->age = age;
}
// write your code here......
Person(const Person &p)
{
this->name = new char[strlen(p.name) + 1];
strcpy(this->name, p.name);
this->age = p.age;
}
void showPerson() {
cout << name << " " << age << endl;
}
~Person() {
if (name != nullptr) {
delete[] name;
name = nullptr;
}
}
};
int main() {
char name[100] = { 0 };
int age;
cin >> name;
cin >> age;
Person p1(name, age);
Person p2 = p1;
p2.showPerson();
return 0;
}
C++ 解法, 执行用时: 2ms, 内存消耗: 388KB, 提交时间: 2021-10-14
#include <iostream>
#include <cstring>
#pragma warning(disable : 4996)
using namespace std;
class Person {
public:
char* name; // 姓名
int age; // 年龄
Person(const char* name, int age) {
this->name = new char[strlen(name) + 1];
strcpy(this->name, name);
this->age = age;
}
Person(const Person& p) {
this->name = new char[strlen(p.name) + 1];
strcpy(this->name, p.name);
this->age = p.age;
}
void showPerson() {
cout << name << " " << age << endl;
}
~Person() {
if (name != nullptr) {
delete[] name;
name = nullptr;
}
}
};
int main() {
char name[100] = { 0 };
int age;
cin >> name;
cin >> age;
Person p1(name, age);
Person p2 = p1;
p2.showPerson();
return 0;
}
C++ 解法, 执行用时: 2ms, 内存消耗: 392KB, 提交时间: 2022-04-17
#include <iostream>
#include <cstring>
using namespace std;
class Person {
public:
char* name; // 姓名
int age; // 年龄
Person(const char* name, int age) {
this->name = new char[strlen(name) + 1];
strcpy(this->name, name);
this->age = age;
}
// write your code here......
Person(const Person& p){ //拷贝构造函数
this->name = new char[strlen(p.name) + 1]; //设置name字符数组的长度
strcpy(this->name, p.name); //拷贝name数组
this->age = p.age;
}
void showPerson() {
cout << name << " " << age << endl;
}
~Person() {
if (name != nullptr) {
delete[] name;
name = nullptr;
}
}
};
int main() {
char name[100] = { 0 };
int age;
cin >> name;
cin >> age;
Person p1(name, age);
Person p2 = p1;
p2.showPerson();
return 0;
}