學生信息管理系統的分析：以菜單的形式打開，然偶輸入自己的姓名或者學號進行查詢，其中包括學生的姓名，年齡，出生年月，地址，電話等信息。通過系統，可以達到對學生信息的輸入，學生信息的修改，學生信息的查詢，學生信息的刪除，學生信息的排序，學生信息的排序和輸出。
使用模塊化的編程方法，每項功能都有對應的函數來完成。
#include<stdio.h> #include<string.h> #include<conio.h> #include<stdlib.h> #include<ctype.h> #define STACK_INIT_SIZE 10 #define OK 1 #define TRUE 1 #define FALSE 0 #define ERROR 0 struct student /*定義學生類型，用於存放借出的書籍*/ { int carnum; char lendbook[10]; }student[1000]; struct employ /*定義職工類型*/ { int employnum; char employname[15]; int employage; char employsex[2]; char employleve[10]; long int employtage; }employ[50]; struct book /*定義書的類型*/ { int booknum; char bookname[10]; char bookcreat[10]; int turefalse; /*用於借書和還書模塊判斷一本書是否借出的條件*/ }book[1000]; struct car /*借書卡的數據類型*/ { int carnum; char studentname[10]; int studentclass; }car[100]; huanbook() /*還書函數*/ { FILE *fp,*fp2; /*定義兩個文件指針，fp2用於修改數據時設立臨時文件用，防止數據遭破壞*/ int i,n; int carnum; char lendbook[10]; printf("請你輸入你的卡號\n"); scanf("%d",&carnum); fp=fopen("car.txt","r"); /*讀取卡號記錄*/ for(i=0;fread(&car[i],sizeof(struct car),1,fp)!=0;i++) /*for循環判斷卡號是否存在*/ { if(car[i].carnum==carnum) /*卡號存在，進入下一循環*/ { n=i; fclose(fp); printf("請輸入你要還的書的名字\n"); scanf("%s",lendbook); fp=fopen("record.txt","r"); for(i=0;fread(&student[i],sizeof(struct student),1,fp)!=0;i++) /*判斷是否借閱了輸入的書*/ { if(strcmp(student[i].lendbook,lendbook)==0) /*借閱了該書，進入下一循環，否則出錯顯示*/ { fclose(fp); fp=fopen("record.txt","r"); fp2=fopen("bookl.txt","w"); for(i=0;fread(&student[i],sizeof(struct student),1,fp)!=0;i++) { if(strcmp(student[i].lendbook,lendbook)==0) { continue; /*刪除還掉的書的借書記錄*/ } fwrite(&student[i],sizeof(struct student),1,fp2); /*寫入原來沒還的書的記錄*/ } fclose(fp); fclose(fp2); fp=fopen("record.txt","w"); fp2=fopen("bookl.txt","r"); for(i=0;fread(&student[i],sizeof(struct student),1,fp2)!=0;i++) { fwrite(&student[i],sizeof(struct student),1,fp); /*將借書記錄信息寫回*/ } fclose(fp); fclose(fp2); fopen("bookl.txt","w"); /*清臨時文件的記錄*/ fclose(fp2); fp=fopen("book.txt","r"); fp2=fopen("bookl.txt","w"); for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++) /*將書的記錄寫入臨時文件，防止因爲修改信息破壞以前的記錄*/ { if(i==n) { book[i].turefalse=1; fwrite(&book[i],sizeof(struct book),1,fp2); /*將還的書的原來狀態設爲無人借閱的*/ continue; } fwrite(&book[i],sizeof(struct book),1,fp2); } fclose(fp); fclose(fp2); fp=fopen("book.txt","w"); fp2=fopen("bookl.txt","r"); for(i=0;fread(&book[i],sizeof(struct book),1,fp2)!=0;i++) { fwrite(&book[i],sizeof(struct book),1,fp); /*將臨時文件寫回*/ } fclose(fp); fclose(fp2); fopen("bookl.txt","w"); /*清臨時文件*/ fclose(fp2); printf("還書完畢，按任意鍵返回\n"); getch(); return 1; } } printf("你沒有借這樣的書，任意鍵返回\n"); /*出錯提示*/ fclose(fp); getch(); return 0; } } printf("系統沒這樣的卡，和管理員聯繫,按任意鍵返回\n"); /*出錯提示*/ fclose(fp); getch(); } findbook() { FILE *fp; char bookname[10]; int ture,i; fp=fopen("book.txt","r"); printf("請輸入你要查找的書名\n"); scanf("%s",bookname); for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++) { if(strcmp(bookname,book[i].bookname)==0) { if(book[i].turefalse==1) { printf("這本書的詳細資料是:%d %s %s 此書現在無人借閱\n按任意鍵返回\n",book[i].booknum,book[i].bookname,book[i].bookcreat); } else {printf("這本書已經有人借出\n");fclose(fp);return 0;} fclose(fp); return FALSE; } } printf("沒有你要查詢的書籍\n"); fclose(fp); return FALSE; } findbook1() { FILE *fp; char bookcreat[10]; int ture,i; fp=fopen("book.txt","r"); printf("請輸入你要查找的作者名\n"); scanf("%s",bookcreat); for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++) { if(strcmp(bookcreat,book[i].bookcreat)==0) { if(book[i].turefalse==1) { printf("這本書的詳細資料是:%d %s %s 此書現在無人借閱\n按任意鍵返回\n",book[i].booknum,book[i].bookname,book[i].bookcreat); } else {printf("這本書已經有人借出\n");fclose(fp);return 0;} fclose(fp); return FALSE; } } printf("沒有你要查詢的書籍\n"); fclose(fp); return FALSE; } lendcount() { FILE *fp; int i,n=0; fp=fopen("record.txt","r"); for(i=0;fread(&student[i],sizeof(struct student),1,fp)!=0;i++) { printf("卡號:%d 借出的書籍:%s \n",student[i].carnum,student[i].lendbook); n=n+1; } fclose(fp); printf("目前共有%d本書借出\n",n); printf("按任意鍵\n"); getch(); return n; } chabook() { char ch5; do { printf("---------------歡迎進入圖書查詢系統!--------------\n"); printf(" 1:<按書名查找>\n"); printf(" 2:<按作者查找>\n"); printf(" 0:<返回>\n"); printf("請輸入0--2,其他輸入非法!\n"); scanf("%s",&ch5); switch(ch5) { case '1':findbook();getch();break; case '2':findbook1();getch();break; case '0':break; default:printf("無此操作\n");getch();break; } }while(ch5!='0'); return FALSE; } lendbook() { FILE *fp,*fp2; int i,n; int carnum; printf("請你輸入你的卡號\n"); scanf("%d",&carnum); fp=fopen("car.txt","r"); for(i=0;fread(&car[i],sizeof(struct car),1,fp)!=0;i++) { if(car[i].carnum==carnum) { n=i; fclose(fp); printf("請輸入你要借閱的書的名字\n"); scanf("%s",student[n].lendbook); fp=fopen("book.txt","r"); for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++) { if(strcmp(book[i].bookname,student[n].lendbook)==0) { if(book[i].turefalse==0) {printf("對不起，此書有人借出，請借其他書\n");fclose(fp);getch();return;} else fclose(fp); fp=fopen("record.txt","a+"); student[n].carnum=carnum; fwrite(&student[n],sizeof(struct student),1,fp); fclose(fp); fp=fopen("book.txt","r"); fp2=fopen("bookl.txt","w"); for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++) { if(strcmp(book[i].bookname,student[n].lendbook)==0) { book[i].turefalse=0; fwrite(&book[i],sizeof(struct book),1,fp2); continue; } fwrite(&book[i],sizeof(struct book),1,fp2); } fclose(fp); fclose(fp2); fp=fopen("book.txt","w"); fp2=fopen("bookl.txt","r"); for(i=0;fread(&book[i],sizeof(struct book),1,fp2)!=0;i++) { fwrite(&book[i],sizeof(struct book),1,fp); } fclose(fp); fclose(fp2); fopen("bookl.txt","w"); fclose(fp2); printf("借書完畢，按任意鍵返回\n"); getch(); return; } } printf("不存在這樣的書，任意鍵返回\n"); fclose(fp); getch(); return; } } printf("你的卡號不存在，請申請新卡,按任意鍵返回\n"); fclose(fp); getch(); } carcount() { FILE *fp; int i,n=0; fp=fopen("car.txt","r"); for(i=0;fread(&car[i],sizeof(struct car),1,fp)!=0;i++) { printf("第%d張卡<卡號:%d 姓名:%s 班級:%d>\n",i+1,car[i].carnum,car[i].studentname,car[i].studentclass); n=n+1; } fclose(fp); printf("目前共有%d本書\n",n); printf("按任意鍵\n"); getch(); } delcar() { FILE *fp,*fp2; int i; int carnum; char choice; fp=fopen("car.txt","r"); fp2=fopen("bookl.txt","w"); printf("請輸入你要刪除的卡號\n"); printf("如果你輸入的卡號存在，系統自動刪除該信息!如果不存在，系統不做任何改動\n"); scanf("%d",&carnum); for(i=0;fread(&car[i],sizeof(struct car),1,fp)!=0;i++) { if(car[i].carnum!=carnum) { fwrite(&car[i],sizeof(struct car),1,fp2); } } fclose(fp); fclose(fp2); printf("是否真的要刪除該卡?刪除後該書籍的所有信息將無法恢復《Y/N》\n"); scanf("%s",&choice); if(choice=='y'||choice=='Y') { fp=fopen("car.txt","w"); fp2=fopen("bookl.txt","r"); for(i=0;fread(&car[i],sizeof(struct car),1,fp2)!=0;i++) { fwrite(&car[i],sizeof(struct car),1,fp); } fclose(fp); fclose(fp2); fp2=fopen("bookl.txt","w"); fclose(fp2); printf("按任意鍵返回\n"); getch(); return; } else { printf("按任意鍵返回\n"); getch(); return; } } addcar() { FILE *fp; int i=0; fp=fopen("car.txt","a+"); printf("請你輸入卡號\n"); scanf("%d",&car[i].carnum); printf("請你輸入學生姓名\n"); scanf("%s",car[i].studentname); printf("請你輸入班級\n"); scanf("%d",&car[i].studentclass); fwrite(&car[i],sizeof(struct car),1,fp); fclose(fp); printf("輸入完畢，任意鍵返回\n"); getch(); }