Dynamically allocate memory for Array of Structs

Question

Here\'s what I\'m trying to do:

#include 
#include 

struct myStruct {
    int myVar;
}

struct myStruct myBigList = null;

vo         


        

Answer 1

There are a few errors in your code. Make it:

struct myStruct *myBigList = NULL; /* Pointer, and upper-case NULL in C. */

/* Must accept pointer to pointer to change caller's variable. */
void defineMyList(struct myStruct **myArray)
{
     /* Avoid repeating the type name in sizeof. */
     *myArray = malloc(10 * sizeof **myArray);

     /* Access was wrong, must use member name inside structure. */
     (*myArray)[0].myVar = 42;
}

int main()
{
     defineMyList(&myBigList);
     return 0; /* added missing return */
}

Basically you must use the struct keyword unless you typedef it away, and the global variable myBigList had the wrong type.