struct packet
{
    int *buffer;
    make(int temp)
    {
        buffer = new int[temp] ;
    }
};

struct packet event1;

void main()
{
    event1.make(4)  ;

    event1.buffer[0] = 10 ;
    event1.buffer[1] = 20 ;
    event1.buffer[2] = 30 ;
    event1.buffer[3] = 40 ;

    printf("%d", event1.buffer[3]) ;
    delete[] event1.buffer ;
}