程序代码：

#include<stdio.h>
union ks
{
    int a;
    int b;
};
union ks s[4];
union ks *p;
main()
{
    int n=1,i;
    printf("\n");
    for(i=0;i<4;i++)
    {
        s[i].a=n;
        s[i].b=s[i].a+1;
        n=n+2;
    }
    p=&s[0];
    printf("%d,",p->a);
    printf("%d\n",++p->a);
}