[C++] Multi-dimensional Array Argument
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I know that you can have a single dimensional array argument simply like this
myFunction(int array[])
but, what about multidimensional? if I do this:
myFunction(int array[][])
I get errors.
You can only create a multidimensional array argument if all the dimensions except the first are specified (though specifying the first can also be done). i.e.:
void myFunction(int argument[][64]) // legal
void myFunction(int argument[][5][5]) // legal
void myFunction(int argument[][5][]) //illegal
void myFunction(int argument[2][2]) // legal
void myFunction(int argument[][64]) // legal
void myFunction(int argument[][5][5]) // legal
void myFunction(int argument[][5][]) //illegal
void myFunction(int argument[2][2]) // legal
Quote:Original post by SiCrane
You can only create a multidimensional array argument if all the dimensions except the first are specified (though specifying the first can also be done). i.e.:
void myFunction(int argument[][64]) // legal
void myFunction(int argument[][5][5]) // legal
void myFunction(int argument[][5][]) //illegal
void myFunction(int argument[2][2]) // legal
and not forgetting
void myFunction(int** argument)
void myFunction(int* argument[])
int** is simply a pointer to a pointer. Consider:
void MyIllAdvisedFunctionToCreateAnArray(int** array, size_t size){ (*array) = new int[size];}Quote:Original post by jyk
...a multi-dimensional array is one possible interpretation of a pointer to a pointer, but it isn't the only interpretation.
True, but the function prototypes are perfectly valid.
Actually, multi-dimensional arrays have a specific type in the C and C++ type system, which is not compatible with the pointer to pointer type. That is to say there is no conversion from an int[2][2] to an int **. They just aren't the same.
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