assignment to Expression with array type

Question

I’m having an error when associating an array address on a pointer to struct, I’m getting a type error:

assignment to Expression with array type

The code I’m using is this:

struct MaxHeap
{
    int size;
    int* array;
};

struct MaxHeap* createAndBuildHeap(char array[][25], int size)
    int i;
    struct MaxHeap* maxHeap =
          (struct MaxHeap*) malloc(sizeof(struct MaxHeap));
    maxHeap->size = size;   // initialize size of heap
    maxHeap->array = array; // Assign address of first element of array

    // Start from bottommost and rightmost internal mode and heapify all
    // internal modes in bottom up way
    for (i = (maxHeap->size - 2) / 2; i >= 0; --i)
        maxHeapify(maxHeap, i);
    return maxHeap;

Answer 1

When you try to pass the array to the new allocated structure:

maxHeap->array = array; // Assign address of first element of array

The guy from maxHeap->array doesn’t play with the guy from array of function.

Now look at them both carefully:

struct MaxHeap
{
    int size;
    int* array;
};//^
//  ^ int* aqui --------------------------- char[][] aqui 
//                                        v
struct MaxHeap* createAndBuildHeap(char array[][25], int size)

Which means he’s trying to plant one char[][] in a int*.

From what you indicated in the comments, you want to use heap for names, so you should change the structure of it to char **, the right kind for it:

struct MaxHeap
{
    int size;
    char **array; //agora o tipo correto para os nomes
};