#include <stdio.h>
#include <stdlib.h>
int* readToZero(int *size);
void printArray(int size, int* array);
int main()
{
    int size=0;
    int* array=NULL;

    array=readToZero(&size);
    addElement(array, &size);
    printArray(size, array);

}

int* readToZero(int *size)
{
    int* arr = NULL;
    int currentSize = 0;
    int value;
    while(1)
    {
        printf("Value: ");
        scanf("%d", &value);
        if(value==0)
            break;
        arr=(int*)realloc(arr, (currentSize+1)*sizeof(int));
        *(arr+currentSize) = value;
        currentSize++;
    }
    *size = currentSize;
    return arr;
}

void printArray(int size, int* array)
{
    int i;
    for(i=0; i<size; i++)
        printf("[%d]=%d\n", i, *(array+i));
}

void addElement(int* array, int* size)
{
    int value;
    printf("Value: ");
    scanf("%d", &value);
    array=(int*)realloc(array, (*size+1)*sizeof(int));
    *(array+*size) = value;
    *size+=1;
}