Section 27.6 Create Digits in Memory

Please write the function createDigit() which receives an integer (0-9) as an argument and which creates space in memory for a digit of type digit_t. The function should store the integer passed into it in this newly created digit and then return the address of this digit to the calling function. The function should furthermore initialize the pointer next as the NULL pointer, just to be safe.

#include <stdio.h>
#include <stdlib.h>

struct digit {
    int num;
    struct digit *next;
};

typedef struct digit digit_t;

digit_t *createDigit(int);

int main(void) {
    digit_t *numberptr;
    numberptr = createDigit(5);
    printf("We are storing the digit %d.\n", numberptr->num);
    free(numberptr);
    return 0;
}

digit_t *createDigit(int dig) {


}