一段c++代码，编译，组建都没有错，运行不了，为啥，求指教！！
一段c++代码，编译，组建都没有错，运行不了，为啥，求指教！！
//.........................................
//test.cpp
//.........................................
#include<iostream>
using namespace std;
//.........................................
class person{
int hight,weight;
char* pName;
public:
person(char* pn="NOname",int x=0,int y=0){
pName = pn;
hight = x;
weight = y;
}
person(const person& s){
cout<<"copy constructing "<<s.pName<<"\n";
pName = new char(strlen(s.pName)+1);
pName = s.pName;
hight = s.hight;
weight = s.weight;
}
~person(){
cout<<"Destructing "<<pName<<"\n";
delete[] pName;
}
};//........................................
void main(){
person p1("Randy",90,90);
person p2(p1);
}//================================================
[解决办法]
帮你调了一下，原因就不解释了
//.........................................
//test.cpp
//.........................................
#include<iostream>
using namespace std;
//.........................................
class person{
int hight,weight;
char* pName;
public:
person(char* pn="NOname",int x=0,int y=0){
pName = pn;
hight = x;
weight = y;
}
person(const person& s){
cout<<"copy constructing "<<s.pName<<"\n";
//pName = new char[strlen(s.pName)+1];
pName = s.pName;
hight = s.hight;
weight = s.weight;
}
~person(){
cout<<"Destructing "<<pName<<"\n";
//delete []pName;
}
};//........................................
void main(){
person p1("Randy",90,90);
person p2(p1);
}//================================================
[解决办法]
建议你先把指针的概念理解清楚，还有看看林锐的高质量C++编程
pName = new char(strlen(s.pName)+1);这个很有问题
且，你的构造函数不应该这么写，如果是一个局部变量，那么会导致内存访问问题
[解决办法]
person(const person& s){
cout<<"copy constructing "<<s.pName<<"\n";
//pName = new char[strlen(s.pName)+1];
pName = s.pName; //以盲導盲
hight = s.hight;
weight = s.weight;
}
[解决办法]
#include<iostream>
#include <string>
using namespace std;
//.........................................
class person{
int hight,weight;
string pName; //用string類型
public:
person(string pn="NOname",int x=0,int y=0){
pName = pn;
hight = x;
weight = y;
}
person(const person& s){
cout<<"copy constructing "<<s.pName<<"\n";
//pName = new char(strlen(s.pName)+1);
pName = s.pName;
hight = s.hight;
weight = s.weight;
}
~person(){
//cout<<"Destructing "<<pName<<"\n";
//delete[] pName;
}
};//........................................
int main(){
person p1("Randy",90,90);
person p2(p1);
return 0;
}//==================
