Question

C/C++用了下模板函数,然后就出错了,代码就几行,简化到不能简化的地步了.诸位路过的看一下.全部家都压下了

template <class TT>
class AA{
public:
TT *Data;
AA() {Data=new TT[1];}
~AA() {delete Data ;}
};
class BB{
public:
char *str;
BB() {str=new char[20];}
~BB() {delete str ;}
};
int main(int argc, char* argv[])
{
AA<BB> D;
return 0;
}

Answer 1

#include<iostream>
using namespace std;
template <class TT>
class AA{
public:
TT *Data;
AA() {Data=new TT[1];}
~AA() {delete[] Data ;} //这里错误，删除数组要加[]
};
class BB{
public:
char *str;
BB() {str=new char[20];}
~BB() {delete str ;}
};
int main(int argc, char* argv[])
{
AA<BB> D;
return 0;
}

Answer 2

//改成以下这样就OK了
template <class TT>
class AA{
public:
TT *Data;

AA(){
Data=new TT[1];
}
~AA(){
delete [] Data;
}
};

class BB{
public:
char *str;
BB(){
str=new char[20];
}
~BB(){
delete [] str;
}
};

int main(){
AA<BB> D;

return 0;
}