Array too many initializer values

Question

I have a function declaration as follows

void set_values(float values[4][4]);

If I call the function like this everything is OK.

float values[4][4] = {
    { 1, 2, 3, 4 },
    { 1, 2, 3, 4 },
    { 1, 2, 3, 4 },
    { 1, 2, 3, 4 } 
};
mat1.set_values(values);

However i thought that I could take the array declared in the curly braces and pass it directly into the function like this:

    mat1.set_values({
        { 1, 2, 3, 4 },
        { 1, 2, 3, 4 },
        { 1, 2, 3, 4 },
        { 1, 2, 3, 4 } 
    });

But this gives me a compile error too many initializer values

Why does the first code work but not the second one?

Possible duplicate: https://stackoverflow.com/questions/1269568/how-to-pass-a-constant-array-literal-to-a-function-that-takes-a-pointer-without — scohe001, Sep 28 '17 at 18:36
related/dupe: https://stackoverflow.com/questions/31537349/initialiser-list-passed-as-function-parameter-for-array — NathanOliver, Sep 28 '17 at 18:39
if you dont mind changing the signature of the function: [this works](https://ideone.com/RFq9p1) — 463035818_is_not_an_ai, Sep 28 '17 at 18:47
No it doesn't have to be a raw array but I want to understand why this doesn't work. — Lars, Sep 28 '17 at 18:47

score 3 · Accepted Answer · answered Sep 28 '17 at 19:12

3

Your function expects an array object, not an initialization list for such an object.

answered Sep 28 '17 at 19:12

Alex

1 Answers1