程序代码：

#include<stdio.h>
#define TITL 40
#define AUTL 40
#define BKS 2
struct book {
    char title[TITL];
    char author[AUTL];
    float value;
};

int main()
{
    struct book library[BKS];
    int count = 0;
    int index;

    printf("Please enter the book title.\n");
    printf("Press [enter] at the start of a line to stop.\n");
    while(count < BKS && gets(library[BKS].title) != NULL && library[count].title[0] != '\0')
    {
        printf("Now enter the author.\n");
        gets(library[count].author);
        printf("Now enter the value.\n");
        scanf("%f",&library[count++].value);
        while(getchar() != '\n');  
        if(count < BKS)
            printf("Enter the next title.\n");
    }

    if(count > 0)
    {
        printf("Here is the list of your books: \n");
        for(index = 0; index < count; index++)
            printf("%s by %s:$%.2f\n", library[index].title, library[index].author, library[index].value);
    }
    else
        printf("No books?Too bad.\n");
    return 0;



}

[此贴子已经被作者于2017-6-6 16:16编辑过]

[此贴子已经被作者于2017-6-6 16:17编辑过]