does this error make sense

Usually when MSVC tells me something is wrong, something is wrong.

But here is a chunk of my code and i think this error is bogus.

Code:

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1>.\SnapLib.c(42) : warning C4047: 'function' : 'uInt8 **' differs in levels of indirection from 'uInt8 *'
1>.\SnapLib.c(42) : warning C4024: 'AnalogueCardInit' : different types for formal and actual parameter 2

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Code:

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int AnalogueCardInit( uInt8 *image1D, uInt8 **image2D);
int main(void){
        uInt8* Buffer1D = NULL;
        uInt8** Buffer2D = NULL;

        int nothing = 0;
        nothing = AnalogueCardInit( Buffer1D, *Buffer2D);
}
int AnalogueCardInit ( uInt8 *image1D, uInt8 **image2D){
...
}

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This will be part of a library and Buffer1D will hold the values and Buffer2D will point to parts of Buffer1D making a 2D array

The second argument is uInt8** and Buffer2D is uInt8**, so why do you dereference Buffer2D to pass it to this function?

The error (or rather, warning) is not bogus. It is just telling you that Buffer2D is a uInt8**, so *Buffer2D is a uInt8*. However, the second parameter of AnalogueCardInit is a uInt8**, not a uInt8*, yet you pass *Buffer2D as the argument.

From what I can see you are passing a pointer to AnalogueCardInit, but the function is expecting a pointer of a pointer (second argument). You should just pass Buffer2D, without the indirection.

QuantumPete

so when passing a 2D array into a function you have

Code:

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int main(void){
    int**something;
    foo(something);
    return 0;
}
function foo(**something){
}

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edit: I want them both to be passed by reference if that makes a difference. I want the values in main to change when foo does stuff

Quote:

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I want them both to be passed by reference if that makes a difference. I want the values in main to change when foo does stuff

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To begin with, have you worked with one dimensional arrays?

yes i have
i thought when you wanted to pass by reference it looks like
&Variable
1Dstring
*2Dstring
**3Dstring

but i suppose it is really

&Variable
1Dstring
2Dstring
3Dstring