C++代码一直是执行错误

问题描述

#include<iostream>#include<string>#include<fstream>using namespace std;class citizen{private: char name[20]; char sex; int age;public: citizen(); citizen(char name[], char sex, int age); virtual void show(); ~citizen() {ofstream myout;myout.open('a.txt', ios::out | ios::app);cout << 'this is the first destruction function!' << endl;myout << 'this is the first destruction function!' << endl; }};class student :public citizen{private: char number[20]; char classname[20];public: student(char name[], char sex, int age, char number[], char classname[]) :citizen(name, sex, age) {strcpy_s(this->number, number);strcpy_s(this->classname, classname); } void show(); ~student() {ofstream myout;myout.open('a.txt', ios::out | ios::app);cout << 'this is the second destruction function!' << endl;myout << 'this is the second destruction function!' << endl; }};citizen::citizen(char name[], char sex, int age){ strcpy_s(this->name, name); this->sex = sex; this->age = age;}void citizen::show(){ ofstream myout; myout.open('a.txt', ios::out | ios::app); cout << '姓名为：' << name << endl; cout << '性别为：' << sex << endl; cout << '年龄为：' << age << endl; myout << '姓名为：' << name << endl; myout << '性别为：' << sex << endl; myout << '年龄为：' << age << endl;}void student::show(){ ofstream myout; myout.open('a.txt', ios::out | ios::app); citizen::show(); cout << '学号为：' << number << endl; cout << '班级为：' << classname << endl; myout << '学号为：' << number << endl; myout << '班级为：' << classname << endl;}int main(){ ofstream myout; myout.open('a.txt', ios::out | ios::app); char name[20], number[20], classname[20]; char sex; int age; citizen *c; cout << '请输入姓名，性别（男：m，女：f）,年龄' << endl; myout << '请输入姓名，性别（男：m，女：f）,年龄' << endl; cin >> name >> sex >> age; myout << name << ’t’ << sex << ’t’ << age << endl; c=&citizen(name, sex, age); cout << '公民类的输出：' << endl; myout << '公民类的输出：' << endl; c->show(); cout << '请输入学号，班级' << endl; myout << '请输入学号，班级' << endl; cin >> number >> classname; myout << number << ’t’ << classname << endl; c=&student(name, sex, age, number, classname); cout << '大学生类的输出：' << endl; myout << '大学生类的输出：' << endl; c->show(); return 0;}

问题解答

首先……既然用了函数就把头文件写上……

#include <cstring>

然后，这份代码在clang下编译失败

如果在vs上可能能通过吧，手上没有vs不知道。指向临时变量的指针是未定义的，临时变量随时可能被销毁，所以访问被回收的内存可能会发生错误

以上

你好，下次提问请描述错误信息。

我在vs 2015下运行没有问题。

你这问题问的，代码一贴什么都不解释，那么一长串代码你都不解释一下你这是在干嘛，怎么个错误类型，想帮你都懒得看。。