type 'double' unexpected?

This is a discussion on type 'double' unexpected? within the C++ Programming forums, part of the General Programming Boards category; why does the line: "cout << elements(dArray);" in main() produce a compiler error saying "type 'double' unexpected"? I am using ...

  1. #1
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    Question type 'double' unexpected?

    why does the line: "cout << elements(dArray);" in main() produce a compiler error saying "type 'double' unexpected"? I am using Visual C++.

    #include <iostream>
    #include <cstdlib>
    using namespace std;

    void printAverage(double dArray);

    const int dDIM1 = 3, dDIM2 = 2, dDIM3 = 5, dDIM4 = 2;
    const int SEED = 1000;

    #define elements(array) (sizeof(array)/sizeof(array)/double)

    int main()
    {
    double dArray[dDIM1][dDIM2][dDIM3][dDIM4], *elPtr;
    //double (*elPtr)[dDIM1][dDIM2][dDIM3][dDIM4] = &dArray;
    srand(SEED);
    for(elPtr = (double *)dArray; elPtr < (double *)(&dArray+1); ++elPtr)
    *elPtr = (double)rand();

    cout << dArray[0][0][0][0] << endl;
    cout << dArray[0][0][3][1] << endl;
    cout << dArray[1][0][0][2] << endl;

    cout << elements(dArray);
    //double average = ((dArray[0][0][0][0]) + (dArray[0][0][3][1]) + (dArray[1][0][0][2])) / elements(dArray);
    //cout << average << endl;
    //printAverage(dArray);

    return (0);
    }
    rc7j

  2. #2
    Budding Synth Programmer samGwilliam's Avatar
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    >> (sizeof(array)/sizeof(array)/double)

    sizeof (array) / sizeof (array)

    = 1 if the precedence is how I think it is.
    MSVC++ 6.0

  3. #3
    Registered User
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    thanks

    That is where the error is. SB: #define elements(array) (sizeof(array)/sizeof(double))
    rc7j

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