👀  So, how to fill the array automatically? 

#include <stdio.h>
#include <stdlib.h>
int main()
{
    // We will use the following variable as a pointer to the array:
    int* ptr = NULL; 
    int* next_ptr = NULL;
    
    // There we've allocated the memory for 5 array cells:
    ptr = (int*)malloc(5*sizeof(int));
    
    // Next step: fill 5 cells with random by using cycle and pointers:
    for(next_ptr = ptr; next_ptr-ptr<5; next_ptr++)
        *next_ptr = rand()%9;
    
    // Finally, print the data from the array by cycle:
    for(int i = 0; i<5; i++)
        printf("%d ", *(ptr+i));

    return 0;
}

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