C programming I'm trying to fix memory leak but it kept giving that one error. Where did I go wrong? #include #include void printArray(int *arr, int size){    int i;    if (arr != NULL)    {    for( i = 0; i < size; i++) {        // Print each element out        printf("%d", *(arr+i));                  //Print addresses of each element        printf("%p", (arr+i));              //Printing a new line        printf("\n");    } }   } int main() {    // Allows user to specify the original array size, stored in variable n1.    printf("Enter original array size: ");    int n1 = 0;    scanf("%d", &n1);    //a- Create a new array *a1 of n1 ints using malloc    int *a1 = malloc(n1 * sizeof(int));    //b- Remove comments for if statment below    //b- Set each element in a1 to 100 + indexValue ??    if(a1 == NULL) { printf("Error! memory not allocated.");    exit(0); }    int i;    for (i = 0; i < n1; i++)    {        a1[i] = 100 + i;    }    printf("Printing the first array allocated using malloc\n");    //c- Print each element and addresses out (to make sure things look right)    printArray(a1, n1);    // User specifies the new array size, stored in variable n2.    printf("\nEnter new array size: ");    int n2 = 0;    scanf("%d", &n2);    //d- Dynamically change the array a1 to size n2    a1 = malloc (n2 * sizeof(int));    //e- Remove comments for if statment below    if(a1 == NULL)    {    printf("Error! memory not allocated.");    exit(0);    }               //e- If the new array is a larger size, set all new members to 200 + indexValue.    if (n2 > n1)    {        int i;        for (i = 0; i < n2; i++)        {            a1[i] = 100 + i;        }    }    printf("Printing the reallocated array: \n");    //f- Print each element and addresses out (to make sure things look right)    printArray(a1, n2);    //g-Free the allocated memory for a1    free(a1);    a1 = NULL;    printf("\nEnter new array size to be initialized with 0: ");    int n3 = 0;    scanf("%d", &n3);    //h- Remove comments for if statement    //h- Using calloc create a new array and assign it to a2    //with new array size, stored in variable n3.    int *a2 =calloc(n3, sizeof(int)); if(a2 == NULL) {    printf("Error! memory not allocated.");    exit(0);    }    printf("Printing the array created using calloc: \n");    //i- Print array a2 with size n3    printArray(a2, n3);       //j- Print array a1 again, How you can fix this problem    printf("Printing deallocated array a1: \n");    printArray(a1, n2);    // Done with arrays now, free the and assign NULL    free(a2);    a1 = NULL;    a2 = NULL;      printf("Program Successfully Completed!");    return 0; }