Sum up

#include <stdio.h>

void sum(int array1[], int array2[], int array3[], int size);

int main(void){
    const int SIZE=4;
    int array1[]={2,4,5,8};
    int array2[]={1,0,4,6};
    int array3[SIZE];
    int x;
    sum(array1, array2, array3, SIZE);

    for (x=0; x<SIZE; x++){
        printf("%4d", array3[x]);
    }
    printf("\n");
    return 0;
}

void sum(int array1[], int array2[], int array3[], int size){
    int i;
    int *ptr1, *ptr2, *ptr3;
    ptr1=array1;
    ptr2=array2;
    ptr3=array3;
    for(i=0; i<size; i++){
        *ptr3=*ptr1+*ptr2;
        ptr1++;
        ptr2++;
        ptr3++;
    }


}