C課程設計圖書管理系統(tǒng)源代碼

#include"stdio.h"#include"stdlib.h"#include"string.h"#include"io.h"typedefstructbook{ charnum[15];//中圖分類號 charname[20];//書名 charauthor[20];//作者 charpress[20];//出版單位 chartime[15];//出版時間 charstatus[10];//是否可借 doubleprice;//價格 intcount;//庫存量}book;voidmenu(); //圖書館系統(tǒng)界面voidinsert();//插入圖書信息記錄voidbrowse();//瀏覽圖書信息voidfind();//查找圖書信息voiddeleter();//刪除圖書信息voidmodify();//修改圖書信息voidleave();//退出圖書系統(tǒng)voidmain(){ intchoice; do { menu(); printf("請選擇服務項目:"); 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("輸入數據錯誤,請從新輸入!"); } }while(1); }voidmenu(){ printf("\t====================歡迎進入圖書館系統(tǒng)!=============================\n\n"); printf("\t\t*****************1.錄入圖書信息********************\n"); printf("\t\t*****************2.瀏覽圖書信息********************\n"); printf("\t\t*****************3.查找圖書信息********************\n"); printf("\t\t*****************4.刪除圖書信息********************\n"); printf("\t\t*****************5.修改圖書信息********************\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，則初始化文件格式 { if((fp=fopen("bookinf.txt","w"))==NULL) { printf("filecreatfailure!"); exit(0); } fprintf(fp,"中圖分類好書名作者出版社出版時間狀態(tài)價格數量"); } else//如果文件存在，則打開文件追加信息 { if((fp=fopen("bookinf.txt","a+"))==NULL) { printf("fileopenerror!"); exit(0); } } printf("請輸入圖書信息\n"); printf("中圖分類好 書名 作者 出版社 出版時間 狀態(tài) 價格 數量\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);//-為左對齊，必須是“\n和+右對齊”，方便實現browse()函數 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]");//跳過文本的第一行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("請輸入所要查找圖書的中圖分類號:"); scanf("%s",str); if((fp=fopen("bookinf.txt","r"))==NULL) { printf("fileopenerror!\n"); exit(0); } fscanf(fp,"%*[^\n]");//跳過文本的第一行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("所找圖書信息為:"); 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的用處 } if(flag==0) printf("您所找的圖書不存在!\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("請輸入所要刪除圖書的中圖分類號:"); 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,"中圖分類好書名作者出版社出版時間狀態(tài)價格數量"); fscanf(fp,"%*[^\n]");//跳過文本的第一行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("所要刪除的圖書不存在!\n"); else printf("刪除成功!\n");}voidmodify(){ charstr[15]="\0"; FILE*fp,*fp1; chars[120]="\0"; booka={"\0","\0","\0","\0","\0","\0",0.0,0}; printf("請輸入所要修改圖書的中圖分類號:"); 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);//讀取bookinf.txt第一行的信息，使讀取位置移動到第二行 fprintf(fp1,"中圖分類好書名作者出版社出版時間狀態(tài)價格數量");//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記錄，則從新輸入圖書信息 { printf("請輸入圖書信息,即將記錄修改為:\n"); printf("中圖分類好 書名 作者 出版社 出版時間 狀態(tài) 價格 數量\n"); scanf("%s%s%s%s%s%s%lf%d",a.num,,a.