C++关键字 explicit

class myArray{
public:
 explicit myArray(int count){
  this->count = count;
  this->ptr = new int[count];
 };

 ~myArray(){
  delete[] ptr;
 };
private:
 int count;
 int* ptr;
};

int _tmain(int argc, _TCHAR* argv[])
{
 myArray obj1(10);
 int a=5;
 myArray obj2=5; //c2440
 return 0;
}

转载于:https://blog.51cto.com/148332727/112790