Question

I have the following code:

template <typename M>
struct Matrix
{
Matrix(int size);//(int x = defaultRows, int y = defaultCols);
~Matrix();

int rowSize;
int colSize;
char alpha[4];

int getSize() const;
void displayAll();
M getElement(int x, int y);

M** aMatrix;
};


template <typename M>
Matrix<M>::Matrix(int size)
{
alpha = {'a', 'b', 'c', 'd'};

rowSize = size;
colSize = size + 1;
aMatrix = new M*[rowSize];

srand(time(NULL)); //set the random seed

for(int r = 0; r < size; r++)
{
    aMatrix[r] = new M[colSize];
    for(int c = 0; c < colSize; c++)
    {
        int randomNum = rand() % 19 + (-9);
        aMatrix[r][c] = randomNum;
    }
}
}

I don’t know why, but i keep getting errors when I try to complie the program. Its to do with my “alpha” char array (when I comment it out, it works fine).

I don’t see whats wrong with it at all…

The errors are:
Error 3 error C2143: syntax error : missing ‘;’ before ‘}’

Error 2 error C2143: syntax error : missing ‘;’ before ‘{‘

Error 1 error C2059: syntax error : ‘{‘

Don’t think I have missed anything out have I??

Answer 1

You can’t do this in C++ (well not for some time anyway):

alpha = {'a', 'b', 'c', 'd'};

It looks like an initializer but it’s not. Try:

alpha[0] = 'a';
alpha[1] = 'b';
alpha[2] = 'c';
alpha[3] = 'd';

EDIT

Not that it will help you much but C99 (along with some C++ compilers, as an extension) supports this:

alpha = (char[]){'a', 'b', 'c', 'd'};