zz

#include <stdio.h>
struct book
{
    char jaemok[40];
    char geja[40];
    int su;

};

main()
{
    struct book a;
    printf("제목넣어라.\n");
    gets(a.jaemok);
    gets(a.geja);
    scanf("%d, &a.su");
    printf("%s by %s in %d",a.jaemok,a.geja,a.su);

}