Multidimensional Arrays!

This is a discussion on Multidimensional Arrays! within the C++ Programming forums, part of the General Programming Boards category; Hi all, I'm struggling to understand the secret behind passing a multidimensional array to a function in my program, please ...

  1. #1
    Registered User JM1082's Avatar
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    Thumbs down Multidimensional Arrays!

    Hi all,

    I'm struggling to understand the secret behind passing a multidimensional array to a function in my program, please see my code below:
    Code:
    #include <iostream>
    using namespace std;
    
    const int employees = 4;
    const int items = 5;
    
    int validateEmployeeNumber(); // enure only numbers within the acceptable range are passed
    void zeroArray( int[][items], int ); // wipe all data from the array
    
    int main()
    {
        int sales[employees][items];
        int employeeNumber = 0;
    
        zeroArray( sales[][items], employees);
    
        while ( employeeNumber != -1 )
        {
            employeeNumber = validateEmployeeNumber();
    
    
        }
    
    } // end main
    
    // wipe all data from the array
    void zeroArray( int sales[][items], int employees )
    {
        for ( int i = 0; i < employees; i++ )
        {
            for ( int j = 0; j < items; j++ )
            {
                sales[i][j] = 0;
            }
        }
    } // end function zeroArray
    
    // enure only numbers within the acceptable range are passed
    int validateEmployeeNumber()
    {
        int empNo;
    
        cout << "Enter employee number ( or 0 to show summary ): ";
        cin >> empNo;
    
        while ( empNo < 0 || empNo > 4 )
        {
            cout << "Your input was not recognised!\nEnter employee number ( or 0 to show summary ): ";
            cin >> empNo;
        }
    
        return empNo - 1;
    } // end function validateEmployeeNumber
    My program refuses to work even though I've followed the textbook instructions and explicitly specified the second dimension's array boundaries!

    My IDE keeps telling me "Line 15 - error: expected primary-expression before ] token"

    Any help on this issue would be most appreciated!

  2. #2
    and the hat of wrongness Salem's Avatar
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    > zeroArray( sales[][items], employees);
    Calling it, use just the array name (like you would if it were a 1D array), or indeed just a scalar.

    zeroArray( sales, employees);
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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