#include <stdio.h>
void func(int arr[],int xNumOfElem)
{
    int j;
    for(j=0; j<xNumOfElem; j++)
    {
       arr[j] = j + arr[j];
       printf("%d\t",arr[j]);
    }
    printf("\n");
}

int main()
{

    int *a,k;
    a = (int*) malloc(sizeof(int)*10);


    for(k = 0; k<10; k++)
    {
        a[k] = k;
        printf("%d\t",a[k]);
    }
    printf("\n");

    func(a,10); //Func call

    free(a);                                                                                                                              
}

Inside the the function "func" who will allocate/deallocate memory for dynamic array "arr".

arr is an function argument.