#include <stdio.h>
#include <stdlib.h>
int *Calc(int *PA, int Num)
{
    int sum = 0, i;
    for (i = 0; i < Num; i++)
    {
        sum += PA[i];
    }
    PA[0] = sum;
    return PA;
}
int main()
{
    int *PArray = NULL;
    int Total = 0, i = 0;
    printf("enter the number of elements in arrays:\n");
    scanf("%d", &Total);
    PArray = (int *)malloc(Total * sizeof(int));
    printf("give %d element assignment:\n", Total);
    for (i = 0; i < Total; i++)
    {
        scanf("%d", &PArray[i]);
    }
    PArray = Calc(PArray, Total);
    printf("Sum=%d\n", *PArray);
    free(PArray);
    return 0;
}