#include <iostream>
#include<cstring>
#include<string>
#include<vector>
using namespace std;
class String
{
char* array;
public:
String(const char* s)
{
array = new char[strlen(s) + 1]{ '\0' };
strcpy(array, s);
}
~String()
{
if (array)
{
delete[]array;
}
}
String operator+ (const char* p) //返回对象
{
String temp(p);
char* tempStr = temp.array;
temp.array = new char[strlen(array) + strlen(tempStr) + 1]{ '\0' };
strcpy(temp.array, array);
strcat(temp.array, p);
return temp;
}
friend ostream& operator<<(ostream& output,const String& x); // <<函数重载只能定义成友元
};
ostream& operator << (ostream& output,const String& x) //对<<重载的方式
{
output << x.array;
return output;
}
int main()
{
String string1("mystring");
cout << string1 + "ab" << endl;
cout << string1 << endl;
return 0;
}
