#include<vector>
class A
{
public:
int* GetA(int b)
{
for(std::vector<int>::iterator it = _a.begin(); it != _a.end(); ++it)
{
if((*it) == b)
return &(*it); //这里如果直接返回迭代器it会报错 所有取内容然后取地址返回不会报错
}
return NULL;
}
void SetA(int b)
{
_a.push_back(b);
}
private:
std::vector<int> _a;
};
int main()
{
A a;
a.SetA(10);
a.SetA(20);
int* x = a.GetA(10);
std::cout << *x << std::endl; return 0;
}
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