Receiving unexpected return value. Having problems with pointers in C

Question

I am learning the use of pointers, but for some reason my code makes the terminal give an unexpected return value. There is no warning shown in the log, thus I am unsure what's causing the problem. Any help is highly appreciated! My code:

#include <stdio.h>
int findArraySum(int *pArr, int ArrSize)
{
    int i,sum=0;
    for(i=0;i<ArrSize;i++)
    {
        sum+=pArr[i];
    }
    return sum;
}
int main()
{
    int arraySize,i;
    printf("Size of array: ");
    scanf("%d",arraySize);
    int array[arraySize];
    for(i=0;i<arraySize;i++)
    {
        printf("Element [%d]: ",i+1);
        scanf("%d",array[i]);
    }
    printf("Sum of array: %d",findArraySum(array,arraySize));
    return 0;
}

I have tried using

//more code

int findArraySum(int *pArr, int *pArrSize)
{
    int i,sum=0;
    for(i=0;i<pArrSize;i++)

//more code

but to no avail, and I also received warning messages for making a pointer from an integer without a cast and for comparing pointer to integer.