I have a 2D array which I declared part of the classes private members. When I call the constructor, I start assigning values to the 2D array. But every time I do so, I'm hit with an error C2059. To make sure nothing else was causing that error I commented out that line and the compiler finished putting together a binary file.
tried:
Variable[row] = { 0, 1, 2, 3};
Variable[row][] = { 0, 1, 2, 3};
Variable[row][4] = { 0, 1, 2, 3};
No luck, any clues. Thanks in advance.
This syntax is only to be used for the creation of the object.
int array[4] = {1, 2, 3, 4};
Once the array is created, you have to use a loop to assign values to it.
Here's a short example :
class A
{
int array[4];
public:
A()
{
// Here, array is already created
// You can _assign_ values to it
}
};
If you want to give it values when it's instantiated in the constructor, the only way is to use initialization lists. Unfortunatly, you can't do this with a static array.
See this this thread.
Unfortunately, we can't yet properly initialize arrays that are members of classes. I don't know exactly how yours is declared, but here's an example of what to do:
class X
{
int Variable[3][4];
public:
X()
{
const int temp[][4] = { { 1, 2, 3, 4}, { 5, 6, 7, 8 }, { 9, 10, 11, 12 } };
const int sz = sizeof(Variable)/sizeof(**Variable);
std::copy(*temp, (*temp) + sz, *Variable);
}
};
Since your question is not clear enough, all I can do is demonstrating a simple example.
2D array is initialized as,
//you may "optionally" provide the size of first dimension
int arr[][4] = {
{1,2,3,4},
{11,12,13,14},
{21,22,23,24}
};
And is acessed as,
for ( int i = 0 ; i < 3 ; ++i )
{
for ( int j = 0 ; j < 4 ; ++j )
{
cout << arr[i][j] << endl;
}
}
Online demonstration at ideone : http://www.ideone.com/KmwOg
Are you doing similarly?
C2059error? Sure, I could google it, but should I google or answer your question?Variable?row, please