C语言开发范例宝典（300个源程序让你坐拥C的世界，还能省一大笔银子----值啊！）

#include <stdio.h> /*标准输入输出函数库*/ #include <stdlib.h> /*标准函数库*/ #include <string.h> /*字符串函数库*/ #include <conio.h> /*屏幕操作函数库*/ #define HEADER1 " -------------------------------BOOK-------------------------------------------\n" #define HEADER2 " | number | name |price| author | publishing company |number|\n" #define HEADER3 " |----------|---------------|-----|---------------|---------------------------|\n" #define HEADER4 " -------------------------------Member----------------------------------------\n" #define HEADER5 " | number | name | telephone |\n" #define HEADER6 " |----------|---------------|---------------|\n" #define HEADER7 " | mnumber | member name | bnumber | book name |\n" #define HEADER8 " |----------|---------------|----------|---------------|\n" #define HEADER9 " |-----------------borrow book-------------------------|\n" #define FORMAT " |%-10s|%-15s|%5d|%-15s|%-20s|%5d |\n" #define FORMAT1 " |%-10s|%-15s|%-15s|\n" #define FORMAT2 " |%-10s|%-15s|%-10s|%-15s|\n" #define DATA p->data.num,p->data.name,p->data.price,p->data.author,p->data.pub,p->data.number #define END " ------------------------------------------------------------------------\n" #define N 100 typedef struct book { char num[10]; /*书号*/ char name[15]; /*书名*/ int price; /*定价*/ char author[15]; /*作者*/ char pub[20]; /*出版社*/ int number;/*数量*/ }; typedef struct Member { char mnum[10];/*会员号*/ char mname[15];/*会员姓名*/ char tel[15];/*联系电话*/ }; typedef struct borrow { char mnum[10];/*会员号*/ char mname[15];/*会员姓名*/ char num[10];/*书号*/ char name[15];/*书名*/ }; typedef struct node/*定义图书信息链表的结点结构*/ { struct book data; /*数据域*/ struct node *next; /*指针域*/ }Node,*Link; /*定义node类型的结构变量及指针变量*/ typedef struct mnode/*定义会员信息链表的结点结构*/ { struct Member inf; struct mnode *next; }Mnode,*Mlink; typedef struct bnode/*定义借书信息链表的结点结构*/ { struct borrow binf; struct bnode *next; }Bnode,*Blink; void menu() /*主菜单*/ { system("cls"); /*清屏*/ printf(" Book Management System \n"); printf("\t*************************Menu**********************************\n"); printf("\t* 1 Add book 2 delete book *\n"); printf("\t* 3 search book 4 modify record *\n"); printf("\t* 5 Add member 6 borrow book *\n"); printf("\t* 7 return book 8 save book *\n"); printf("\t* 9 save member 0 quit system *\n"); printf("\t***************************************************************\n"); } void printheader() /*格式化输出表头*/ { printf(HEADER1); printf(HEADER2); printf(HEADER3); } void printdata(Node *pp) /*格式化输出表中数据*/ { Node* p; p=pp; printf(FORMAT,DATA); } void Wrong() /*输出按键错误信息*/ { printf("\n\n\n\n\n***********Error:input has wrong! press any key to continue**********\n"); getchar(); } void Nofind() /*输出未查找此学生的信息*/ { printf("\n=====>Not find this record!\n"); } void Disp(Link l) /*显示单链表l中存储的图书记录*/ { Node *p; p=l->next; if(!p) /*p==NULL则说明暂无记录*/ { printf("\n=====>Not record!\n"); getchar(); return; } printf("\n\n"); printf(HEADER1); printf(HEADER2); printf(HEADER3); while(p) /*逐条输出链表中存储图书信息*/ { printf(FORMAT,DATA); p=p->next; printf(HEADER3); } getchar(); } void Mdisp(Mlink m) /*显示单链表中存储的会员信息*/ { Mnode *p; p=m->next; if(!p) /*p==NULL证明没有会员记录*/ { printf("\n=====>Not record!\n"); getchar(); return; } printf("\n\n"); printf(HEADER4); printf(HEADER5); printf(HEADER6); while(p) /*逐条输出链表中存储的会员信息*/ { printf(FORMAT1,p->inf.mnum,p->inf.mname,p->inf.tel); p=p->next; printf(HEADER6); } getchar(); } Node* Locate(Link l,char findmess[],char nameornum[]) { Node *r; if(strcmp(nameornum,"num")==0) /*按书号查询*/ { r=l->next; while(r) { if(strcmp(r->data.num,findmess)==0) return r;/*返回与输入内容相匹配的结点*/ r=r->next; } } else if(strcmp(nameornum,"name")==0) /*按书名查询*/ { r=l->next; while(r) { if(strcmp(r->data.name,findmess)==0) return r;/*返回与输入内容相匹配的结点*/ r=r->next; } } return 0; /*若未找到，返回一个空指针*/ } void stringinput(char *t,int lens,char *notice)/*输入字符串，并进行长度验证*/ { char n[50]; do{ printf(notice); /*显示提示信息*/ scanf("%s",n); /*输入字符串*/ if(strlen(n)>lens)printf("\n exceed the required length! \n"); /*进行长度是否超过规定值*/ }while(strlen(n)>lens); strcpy(t,n); /*将输入的字符串拷贝到字符串t中*/ } int numberinput(char *notice) { int t=0; do{ printf(notice); /*显示提示信息*/ scanf("%d",&t); /*输入图书数量*/ if (t<0) printf("\n price must >0! \n"); }while(t<0); return t; } void Add(Link l)/*增加图书记录*/ { Node *p,*r,*s; char ch,flag=0,num[10]; r=l; s=l->next; system("cls"); Disp(l); /*先输出已有的图书信息*/ while(r->next!=NULL) r=r->next; /*将指针移至于链表最末尾，准备添加记录*/ while(1) /*可输入多条记录，输入0时退出添加操作*/ { while(1) { stringinput(num,10,"input number(press '0'return menu):"); /*输入书号*/ flag=0; if(strcmp(num,"0")==0) /*输入0退出操作，返回菜单界面*/ {return;} s=l->next; while(s) /*查询输入的书号是否已经存在*/ { if(strcmp(s->data.num,num)==0) { flag=1; break; } s=s->next; } if(flag==1) /*提示用户是否重新输入*/ { getchar(); printf("=====>The number %s is existing,try again?(y/n):",num); scanf("%c",&ch); if(ch=='y'||ch=='Y') continue; else return; } else {break;} } p=(Node *)malloc(sizeof(Node)); /*申请内存空间*/ if(!p) { printf("\n allocate memory failure "); /*如没有申请到，输出提示信息*/ return ; /*返回菜单界面*/ } strcpy(p->data.num,num); /*将字符串拷贝到p->data.num中*/ stringinput(p->data.name,15,"Name:");/*输入图书名称到p->data.name中*/ p->data.price=numberinput("price:");/*输入定价到p->data.price中*/ stringinput(p->data.author,15,"author:");/*输入作者名到p->data.author中*/ stringinput(p->data.pub,20,"publishing company:");/*输入出版社名称到p->data.pub中*/ p->data.number=numberinput("number:");/*输入图书数量到p->data.number中*/ p->next=NULL; r->next=p; /*将新结点插入链表中*/ r=p; } return ; } void Addmember(Mlink m) { FILE *fp; Mnode *p,*r,*s,*q; char ch,qu,flag=0,num[10]; r=m; s=m->next; system("cls"); Mdisp(m);/*将原有记录输出*/ while(r->next!=NULL) r=r->next; /*将指针移至于链表最末尾，准备添加记录*/ while(1) /*可输入多条记录，输入0时退出添加操作*/ { while(1) { stringinput(num,10,"input the number of the member(press '0'return menu):"); /*输入会员号*/ flag=0; if(strcmp(num,"0")==0) /*输入为0，则退出添加操作，返回菜单界面*/ {return;} s=m->next; while(s) /*查询该会员号是否已经存在*/ { if(strcmp(s->inf.mnum,num)==0) { flag=1; break; } s=s->next; } if(flag==1) /*提示用户是否重新输入*/ { getchar(); printf("=====>The number %s is existing,try again?(y/n):",num); scanf("%c",&ch); if(ch=='y'||ch=='Y') continue; else return; } else {break;} } p=(Mnode *)malloc(sizeof(Mnode)); /*申请内存空间*/ if(!p) { printf("\n allocate memory failure "); /*如没有申请到，输出提示信息*/ return ; /*返回主界面*/ } strcpy(p->inf.mnum,num); /*将会员号拷贝到p->data.num中*/ stringinput(p->inf.mname,15,"Name:"); stringinput(p->inf.tel,15,"Telephone:"); p->next=NULL; r->next=p; /*将新结点插入链表中*/ r=p; } return ;