程序代码：

#include<stdio.h>
#define x 40 
#define y 40 
struct book
{

 char tile[x];

 char name[y];
float cost;
};
int main()
{    struct book liu={.tile="vdv",
                     .cost=9,
                        .name="ghg" };
    puts(liu.tile);
    puts(liu.name);
    printf("%f\n",liu.cost);
    return 0;
}