/**
* Author : Berk Soysal
*/

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

int main(){
    //declare variables
    int n,i,*ptr,sum=0;
    //get number of elements from the user
    printf("Enter number of elements: ");
    scanf("%d",&n);

    //memory allocation using malloc()
    ptr=(int*)malloc(n*sizeof(int));  

    //check if malloc returns NULL or not
    if(ptr==NULL)
    {
        printf("Error! memory not allocated.");
        exit(0);
    }

    //get elements of the array from the user
    printf("Enter %d integer values: ",n);
    for(i=0;i<n;++i)
    {
        scanf("%d",ptr+i);
        sum+=*(ptr+i);
    }
    printf("Sum=%d",sum);

    /* FREE the pointer so the allocated address
       can be used by other variables !!! important ! */
    free(ptr);
    return 0;
}