C课程设计图书管理系统源代码

#include"stdio.h"#include"stdlib.h"#include"string.h"#include"io.h"typedefstructbook{ charnum[15];//中图分类号 charname[20];//书名 charauthor[20];//作者 charpress[20];//出版单位 chartime[15];//出版时间 charstatus[10];//是否可借 doubleprice;//价格 intcount;//库存量}book;voidmenu(); //图书馆系统界面voidinsert();//插入图书信息记录voidbrowse();//浏览图书信息voidfind();//查找图书信息voiddeleter();//删除图书信息voidmodify();//修改图书信息voidleave();//退出图书系统voidmain(){ intchoice; do { menu(); printf("请选择服务项目:"); scanf("%d",&choice); switch(choice) { case1:insert();break; case2:browse();break; case3:find();break; case4:deleter();break; case5:modify();break; case6:leave();break; default:printf("输入数据错误,请从新输入!"); } }while(1); }voidmenu(){ printf("\t====================欢迎进入图书馆系统!=============================\n\n"); printf("\t\t*****************1.录入图书信息********************\n"); printf("\t\t*****************2.浏览图书信息********************\n"); printf("\t\t*****************3.查找图书信息********************\n"); printf("\t\t*****************4.删除图书信息********************\n"); printf("\t\t*****************5.修改图书信息********************\n"); printf("\t\t********************6.退出*************************\n");}voidinsert(){ FILE*fp; booka={"\0","\0","\0","\0","\0","\0",0.0,0}; if(access("bookinf.txt",0))//如果文件不存在，则初始化文件格式 { if((fp=fopen("bookinf.txt","w"))==NULL) { printf("filecreatfailure!"); exit(0); } fprintf(fp,"中图分类好书名作者出版社出版时间状态价格数量"); } else//如果文件存在，则打开文件追加信息 { if((fp=fopen("bookinf.txt","a+"))==NULL) { printf("fileopenerror!"); exit(0); } } printf("请输入图书信息\n"); printf("中图分类好 书名 作者 出版社 出版时间 状态 价格 数量\n"); scanf("%s%s%s%s%s%s%lf%d",a.num,,a.author,a.press,a.time,a.status,&a.price,&a.count); printf("%s%s%s%s%s%s%lf%d\n",a.num,,a.author,a.press,a.time,a.status,a.price,a.count); fprintf(fp,"\n%-15s%-20s%-20s%-20s%-15s%-10s%-8.2lf%4d",a.num,,a.author,a.press,a.time,a.status,a.price,a.count);//-为左对齐，必须是“\n和+右对齐”，方便实现browse()函数 fclose(fp);}voidbrowse(){ FILE*fp; booka={"\0","\0","\0","\0","\0","\0",0.0,0},b=a; if((fp=fopen("bookinf.txt","a+"))==NULL) { printf("fileopenerror!"); exit(0); } fscanf(fp,"%*[^\n]");//跳过文本的第一行fscanf(fp,"%*[^\n]%*c");? while(!feof(fp)) { fscanf(fp,"%s%s%s%s%s%s%lf%d",a.num,,a.author,a.press,a.time,a.status,&a.price,&a.count); printf("%-4s%-4s%-4s%-4s%-4s%-4s%-8.2lf%-4d\n",a.num,,a.author,a.press,a.time,a.status,a.price,a.count); a=b; } fclose(fp);}voidfind(){ charstr[15]="\0"; FILE*fp; intflag=0; booka={"\0","\0","\0","\0","\0","\0",0.0,0},b=a; printf("请输入所要查找图书的中图分类号:"); scanf("%s",str); if((fp=fopen("bookinf.txt","r"))==NULL) { printf("fileopenerror!\n"); exit(0); } fscanf(fp,"%*[^\n]");//跳过文本的第一行fscanf(fp,"%*[^\n]%*c");? while(!feof(fp)) { fscanf(fp,"%s%s%s%s%s%s%lf%d",a.num,,a.author,a.press,a.time,a.status,&a.price,&a.count); if(!strcmp(a.num,str)) { flag=1; printf("所找图书信息为:"); printf("%-4s%-4s%-4s%-4s%-4s%-4s%-8.2lf%-4d\n",a.num,,a.author,a.press,a.time,a.status,a.price,a.count); break; } a=b;//b的用处 } if(flag==0) printf("您所找的图书不存在!\n"); fclose(fp);}voiddeleter(){ charstr[15]="\0"; intflag=0; FILE*fp,*fp1; booka={"\0","\0","\0","\0","\0","\0",0.0,0},b=a; printf("请输入所要删除图书的中图分类号:"); scanf("%s",str); if((fp=fopen("bookinf.txt","r"))==NULL) { printf("fileopenerror!"); exit(0); } if((fp1=fopen("f.txt","w"))==NULL) { printf("fileopenerror!"); exit(0); } fprintf(fp1,"中图分类好书名作者出版社出版时间状态价格数量"); fscanf(fp,"%*[^\n]");//跳过文本的第一行fscanf(fp,"%*[^\n]%*c");? while(!feof(fp)) { fscanf(fp,"%s%s%s%s%s%s%lf%d",a.num,,a.author,a.press,a.time,a.status,&a.price,&a.count); if(!strcmp(str,a.num)) { flag=1; continue; } fprintf(fp1,"\n%-15s%-20s%-20s%-20s%-15s%-10s%-8.2lf%4d",a.num,,a.author,a.press,a.time,a.status,a.price,a.count); a=b; } fclose(fp1); fclose(fp); remove("bookinf.txt"); rename("f.txt","bookinf.txt"); if(flag==0) printf("所要删除的图书不存在!\n"); else printf("删除成功!\n");}voidmodify(){ charstr[15]="\0"; FILE*fp,*fp1; chars[120]="\0"; booka={"\0","\0","\0","\0","\0","\0",0.0,0}; printf("请输入所要修改图书的中图分类号:"); scanf("%s",str); if((fp=fopen("bookinf.txt","r+"))==NULL) { printf("fileopenerror!"); exit(0); } if((fp1=fopen("f.txt","w"))==NULL) { printf("fileopenerror!"); exit(0); } fgets(s,120,fp);//读取bookinf.txt第一行的信息，使读取位置移动到第二行 fprintf(fp1,"中图分类好书名作者出版社出版时间状态价格数量");//初始化新文件f.txt while(!feof(fp)) { fscanf(fp,"%s%s%s%s%s%s%lf%d",a.num,,a.author,a.press,a.time,a.status,&a.price,&a.count); if(!strcmp(str,a.num)) //如果遇到所要修改的记录，则从新输入图书信息 { printf("请输入图书信息,即将记录修改为:\n"); printf("中图分类好 书名 作者 出版社 出版时间 状态 价格 数量\n"); scanf("%s%s%s%s%s%s%lf%d",a.num,,a.