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IN CPPHow can we pass arguments to the constructor of a dynamically allocated array of classes?
let entity be a class then, entity* e_ptr[4]={????}; how to pass args to the class ctors and how to call the methods of the class using the e_ptr?
1 ответ
+ 6
You are declaring a 2D array here, right?
Now, you may use {} to call individual constructors, but I don't know if they will work for pointers as well.
So if you had :
class e
{
int a,b;
e(int r,int s):a(r),b(s){}
void print() { cout<<a+b<<"\n"; }
};
You could do :
e myarr[4] = { {1,1},{2,2},{3,3} };
// Works for any type.
And then to call the members :
for(int i=0;i<4;i++) myarr[i].print();
Now, in your case the elements are pointers and so the above loop will use a
-> instead of a dot.