C / C++ / MFC

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

error C2100: illegal indirection

error C2679: binary '>>' : no operator defined which takes a right-hand operand of type 'double' (or there is no acceptable conversion)

int *pNumber = NULL;
*pNumber = 123; // this will result in a crash 
...
int *pNumber = new int;
*pNumber = 123; // this will work as expected
...
int x;
int *pNumber = &x;
*pNumber = 123; // this will also work as expected

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

double  *vector;
double  **matrix;
int     num,
        row,
        col;
 
cout << "Enter the size of the vector: ";
cin >> num;
cout << endl;
 
vector = new double[num];
 
for (int i = 0; i < num; i++)
{
    cout << "Enter the element " << i + 1 << " in the vector: ";
    cin >> vector[i];
}
 
cout << endl << "Enter the number of rows then columns in the matrix: ";
cin >> row >> col;
cout << endl;
 
matrix = new double*[row];
 
for (int j = 0; j < row; j++)
{
    matrix[j] = new double[col];
     
    for (int k = 0; k < col; k++)
    {
        cout << "Enter the element " << k + 1 <<" in the row " << j + 1 << ": ";
        cin >> matrix[j][k];
    }
}

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown