我无法理解为什么在7-6行（结尾）当我输入相同的书名时它没有进入“if”。我在它上面写了printf线来检查打印是否有任何不同，但它不是。它为a.name和bookz [r] .name打印相同的东西。
谢谢！
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define BOOK_NUM 50
#define NAME_LENGTH 200
#define AUTHOR_NAME_LENGTH 100
#define PUBLISHER_NAME_LENGTH 50
#define GENRE_LENGTH 50
typedef struct book {
char name[NAME_LENGTH];
char author[AUTHOR_NAME_LENGTH];
char publisher[PUBLISHER_NAME_LENGTH];
char genre[GENRE_LENGTH];
int year;
int num_pages;
int copies;
} Book;
int main()
{
int opt = 1;
int i = 0, r = 0, k = 0, years, pagess, copiess, copies_to_add;
Book bookz[50];
int zeros[5] = { 0, 0, 0 ,0 ,0 };
Book a;
char c;
// Add book to library
printf("Please enter book name: ");
scanf("\n%[^\n]s", &a.name);
for (i = 0; i < BOOK_NUM; i++)
{
if (zeros[i] == 0)
{
scanf("\n%[^\n]s", &a.author);
scanf("\n%[^\n]s", &a.publisher);
printf("Please enter book genre: ");
scanf("\n%[^\n]s", &a.genre);
scanf("%d", &a.year);
scanf("%d", &a.num_pages);
scanf("%d", &a.copies);
k = i;
bookz[k] = a;
zeros[i] = 1;
printf("The book %s was successfully added!", a.name);
break;
}
else
{
for (r = 0; r < i+1; r++)
{
printf("%s %s", bookz[r].name, a.name);
if (bookz[r].name == a.name)
{
printf("The book already exists. Please enter the number of copies to add:");
scanf("%d, &copies_to_add");
bookz[i].copies = bookz[i].copies + copies_to_add;
printf("Additional copies (%d) of book %s were successfully added!", copies_to_add, a.name);
break;
}
}
}
}