dynamic arrays

[joshky]

OK, the following works on Dev-CPP but on Visual it throws up erros saying size of array unknown? Why?

int size;
cout<<"\nEnter Size: ";
cin>>size;
char list[size];

[kbw]

You can't declare an array with a variable. The storage for an arrray is set aside at compile time. You're relying on run time information.

You probably want to use a vector.

size_t size = 0;
std::cout << "\nEnter Size: ";
std::cin >> size;
std::vector<char> list(size);

[Bazzy]

If you want dynamic array you need to use new:

int size;
cout<<"\nEnter Size: ";
cin>>size;
char *list = new char[size];

//after you used the array:
delete[] list;

-Vectors and other containers are better than dynamic arrays -

[joshky]

i agree, but the assignment is to use arrays. I actually got it to work like this (yeah, it's a two dimensional now):

int size;
char** list;
cin>>size;
char ** list=new char [size][80];

Thanks for the help guys. Still, I wonder how it worked on Dev-Cpp without the pointers

[kempofighter]

dev-cpp must have non-std extensions enabled or simply isn't following the ISO C++ std. Any compiler vendor can write useful extensions to the C++ language. Typically those additional features can be enabled or disabled.