#include <stdio.h>
#include <string.h>
#include <stdlib.h>
typedef struct
{
    int a;
    int b;
} DOUBLE_INT, *Double_int;

Double_int a[4];

int main()
{
    int i;
   
    for ( i=0; i < 4; i++)
    {
        a[i]->a = (i+1);
        
        a[i]->b = (i+1)<<1;

}
   
    for ( i=0; i < 4; i++)
        
    {
        if (a[i]-> a & 1)
            
            printf("a is Odd : a.a = %d a.b = %d\n",a[i]->a,a[i]->b);
        
        else
            
            printf("a is even: a.a = %d a.b = %d\n",a[i]->a,a[i]->b);
    }
    return 0;
}