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\ n“);} n ++; save(a,n);} int del(book a [],int n){int i,j,num,ret; ret = -1; system(” CLS“ ); printf(“请输入要删除的书的编号: ”); scanf(“%d”,&num); for(i = 0; i <100; i ++){if(a [i] .num == num){for(j = i; j <100; j ++){a [j] .num = a [j + 1] .strcpy(a [j] .name,a [j + 1]. 名称); strcpy(a [j] .author,a [j + 1] .author); strcpy(a [j] .press,a [j + 1] .press); strcpy(a [j] .date, a [j + 1] .date); a [j] .price = a [j + 1] .price; strcpy(a [j] .kind,a [j + 1] .kind); a [j]. total = a [j + 1] .total;} printf(“这本书已被删除”); ret = i;}} if(ret ==-1){printf(“未找到相关记录”);} fflush (stdin); return ret;} int xiugai(books a [],int n){int i,num_change,b = -1; system(“ CLS”); printf(“输入要修改的书号: ”) ; scanf(“%d”,&num_change); for(i = 0; i <100; i ++){if(a [i] .num == num_change){getchar(); printf(“修改书名: ”) ; gets(a [i] .name); printf(“更改作者: ”); gets(a [i] .author); printf(“ modify Press: ”); gets(a [i] .press); printf (“修改后的发布日期: ”); gets(a [i] .date); printf(“修改类型: ”); gets(a [i] .kind); printf(“修改价格: ”); scanf(“%d”,a [i] .price); printf(“修改总数: ”); scanf(“%d”,a [i] .total); b = i; break;}} if(i == 100){printf(“未找到相关记录”);}返回n;}空借(书籍a [],int n){ int i,num,fac t,d,I,s; printf(“请输入书的序号: ”); scanf(“%d”,#num; fact = -1; for(i = 0; i < n; i ++){if(a [i] .num == num){printf(“图书名称: %s”,a [i] .name); printf(“出版日期: %s”,a [i] .date); printf(“ Inventory: %S”,a [i] .total); printf(“ \ n”); fact = i; break;}} if(fact!=-1 && a [i] .total> 0){printf(“请输入借阅卡号\ n”); scanf(“%d”,&s); printf(“请输入借阅天数: ”); scanf(“%d”图书管理系统c语言,&d); for(I = 0; I <10; I ++){if(a [i] .usr [I] == 0){a [i] .usr [I] = s; a [i] .day [I] = d; a [i] .total-; break;}} system(“ date / t”);} if(fact!=-1 && a [i] .total == 0){printf(“抱歉,这本书已经借出了.

“);}保存(a,n);}避免退后(书籍a [],int n){int s,I,num,i,fact; printf(”请输入书籍序列号: “) ; scanf(“%d”,#);对于(i = 0; i
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