1、成都信息工程學院計算機系課程實驗報告實驗課程：C語言程序設計2實驗項目：職工管理系統指導教師： 李莉麗學生姓名:桂柯 學生學號：2010051102班 級：計科3班實驗地點： 5201實驗時間：2011 年 5月 11日 點 點實驗成績：評閱老師：李莉麗（說明：實驗報告必須包含下面的每項內容，根據實驗情況認真填寫，封面必須打印或復印（A4紙），書寫上機實驗報告內容的紙張也用A4紙，最后從側面裝訂）一【上機實驗目的】通過親自設計程序，可以令我們熟悉c語言操作，更熟練的掌握c語句。初步體會編程的過程，為將來的程序深入學習打下基礎和培養興趣。二【實驗環境】TC2.0三【上機實驗內容】職工信息管理系統

2、要求：職工信息包括職工號，姓名，性別，年齡，學歷，工資，住址，電話等（職工號不相等）。試設計一職工信息管理系統，使之能夠提供下列功能： （1）系統以菜單方式工作 （2）職工信息錄入功能（職工信息用文件保存） （3）職工信息瀏覽功能 （4）職工信息查詢功能，查詢方式： 1）按學歷查詢 2）按職工號查詢 （5） 職工信息刪除，修改功能（可選項）。思路：（1）錄入并向文件里保存數據的實現思路：C語言并沒有提供由鍵盤輸入數據直接錄入文件的功能，只有內存變量向文件寫入數據的功能，而由鍵盤輸入數據可以到內存變量，因此實現此部分功能時，應當由鍵盤將數據放入變量，再由變量寫入文件。這里錄入要求不采用書上例子，

3、它是用結構體數組，我們要求只用一個結構體實現。先將一個人的信息放入結構體，將這個結構體數據寫入文件后，再將下一個人的信息繼續放在這個結構體中，再將這個結構體寫入文件。這樣節省內存空間。計算并修改文件里數據的實現思路：這部分的功能的實現應當先將文件的數據讀到變量當中，在變量當中完成計算，再將數據寫入文件。如果只是修改文件的數據，并不計算，則可以直接定位到文件中相應的位置，寫入數據，則把原來的數據覆蓋以完成修改。（2）向文件里追加數據的實現思路：文件本身提供了這項功能，只要以 “a”的方式打開就行。然后向文件寫入的數據，直接放在文件末尾。（3）查找文件里是否有某項數據的實現思路：C語言并沒有提供判

4、斷文件內容的功能，必須將文件內容讀到變量里再進行判斷。實際的查找可能是在大量的數據里的查找，高效的查找是折半查找（下學期的數據結構專門講這一內容），折半的前提是排序，因此需先對排序后的文件讀出，以折半方式查找。（這要要求，是希望鞏固折半查找與排序兩個重要算法，至于它的時空效率是否高，可以學完數據結構知識后自己再判斷）。（4）根據要求顯示文件里的某些數據或全部數據的實現思路：C語言沒有提供將文件內容顯示的功能，所以需要將文件內容讀到變量里，再顯示變量。（5）在文件里插入或刪除某項數據的實現思路：C語言同樣沒有直接提供該項功能，因此必須借由內存變量完成。由以前的知識知道，在大量的數據里刪除一個數，

5、用數組表示不合適，因為涉及到大量的數據的移動，用鏈表是合適的，效率高（關于這一點，在數據結構這門課有詳細的講解）。因此完成這部分操作要求用鏈表實現，先將文件里的數據讀出組織成鏈表，在鏈表上完成插入與刪除后，再將鏈表中的數據寫入文件。（6）按某個數據項進行排序生成排序文件的實現思路：排序是在數組里實現。因此先要將文件里的數據讀到數組里，將數組排完序后，再將數據寫入文件（一般寫入一個新文件）。四【上機調試程序流程圖】1.顯示主菜單（以如下程序作為介紹）2. 添加職工信息3. 瀏覽職工信息。4. 查詢職工信息。4（1）根據標號查詢職工信息。（2） 根據姓名查詢職工信息。（3） 根據年齡查詢職工信息。

6、5. 修改職工信息。瀏覽修改后的職工信息。6. 刪除職工信息。瀏覽刪除后的職工信息。7. 用鏈表添加職工信息。瀏覽添加后的職工信息。五【上機調試中出現的錯誤信息、錯誤原因及解決辦法】1. 光條菜單的錯誤：剛開始只能用鍵盤上的英文字母控制光條上下移動，想用上下箭頭的ASCII代碼，結果錯誤不能上下移動解決方法：使用鍵盤掃描碼。2、瀏覽函數 scan()在調試和鏈接的時候都沒有出現錯誤提示，但在運行的時候出現了問題。寫入指定位置的文件，打開后總會有亂碼。與c語言課本上的例題對照后發現，我寫的fopen("wenjian","ab")沒有指定文件的存儲類型。解

7、決方法：在文件名wenjian后面加上.txt后即可。3.瀏覽函數scan()遇到的問題雖然不大，但解決起來很麻煩。理想的運行結果是美觀整齊。即下面的職工信息分別與第一個printf輸出的中文項目提示對齊。解決方法：不斷修改空格個數，不斷運行察看效果。4.程序運行后菜單界面不消失解決方法：使用清屏函數，是每次運行后界面還原。5.功能函數運行完后會跳出界面，直接退出。解決方法：在每個功能函數的后面加如返回值。六【上機調試后的源程序及還存在的問題】源程序：#include<stdio.h>#include<conio.h>#define ESC 0x1b/*鍵盤掃描碼*/#

8、define ENTER 0x0d#define UP 0x48#define DOWN 0x50#define LEFT 0x4b#define RIGHT 0x4dtypedef struct /*定義存放職工信息的類型*/int No;int age;char name20;WORKERBASIC;typedef struct workerWORKERBASIC workerinfo;struct worker *next;WORKER;void cleanscreen()/*清屏*/int i,j;gotoxy(1,1);textbackground(RED);for(i=1;i<

9、;=25;i+)for(j=1;j<=80;j+)cprintf(" ");clrscr();void Initial()/*定義初始化程序的函數*/int i,j;char list720="1. Add",/*菜單名*/"2. Scan","3. Edit","4. Modify","5. Delete","6. Into","7. Exit"cleanscreen();textbackground(YELLOW);for(i

10、=1;i<=14;i+)/*畫窗口*/for(j=1;j<=80;j+)if (i=1|i=14|j<=2|(j>=79)cprintf(" ");else if (i>=3&&i<=12&&j>=5&&j<=76)cprintf(" ");elseprintf(" ");gotoxy(32,4);textcolor(BLACK);cprintf("W E L C O M E !");gotoxy(31,14);cpri

11、ntf("Worker System - BY GK");for(i=0;i<7;i+)/*顯示菜單*/gotoxy(34,i+6);cprintf("%s",listi);void PrintPause()/*暫停*/printf("Press any key to go on . . .");getch();void Guangtiao(int flag)/*定義畫光條的函數*/char list720="1. Add","2. Scan","3. Edit",&q

12、uot;4. Modify","5. Delete","6. Into","7. Exit"gotoxy(34,flag+5);textcolor(WHITE);textbackground(BLACK);cprintf("%s",listflag-1);textcolor(LIGHTGRAY);int Add()/*添加信息*/WORKERBASIC new;FILE *fp=NULL;char ch='y'while(ch='y')cleanscreen();print

13、f("Please input the worker's No. ");scanf("%d",&new.No);getchar();printf("Please input the worker's age: ");scanf("%d",&new.age);getchar();printf("Please input the worker's name: ");scanf("%s",);getchar();if(fp=f

14、open("wenjian.txt","ab")=NULL)fp=fopen("wenjian.txt","wb");if(fwrite(&new,sizeof(WORKERBASIC),1,fp)!=1)printf("add failed!n");PrintPause();fclose(fp);printf("whether go on(y or n):");scanf("%c",&ch);return 0;int Scan()/*查看

15、信息*/WORKERBASIC load;FILE *fp=NULL;int n=0;cleanscreen();if(fp=fopen("wenjian.txt","rb")=NULL)printf("can not find wenjian!n");PrintPause();return 0;printf("-n");printf("No.tworker'sagetworker'namen");while(!feof(fp)if (fread(&load,sizeof

16、(WORKERBASIC),1,fp)=1)n+;elsebreak;printf("%dt%dtt%sn",load.No,load.age,);printf("-n");printf("total:%dn",n);fclose(fp);PrintPause();return 0;void exchange(WORKERBASIC *max,WORKERBASIC *min)/*調換兩個職工在數組中的位置*/WORKERBASIC t;strcpy(,max->name);t.No=max->

17、;No;strcpy(max->name,min->name);max->No=min->No;strcpy(min->name,);min->No=t.No;int EditByNo(WORKERBASIC *F1,int n)/*按編號查找*/int i,j,k,num,high,low,mid,flag=0;for(i=0;i<n-1;i+)/*排序*/k=i;for(j=i+1;j<n;j+)if (F1+k*sizeof(WORKERBASIC)->No) > (F1+j*sizeof(WORKERBASIC)-

18、>No)k=j;if (k!=i)exchange(F1+i*sizeof(WORKERBASIC),(F1+k*sizeof(WORKERBASIC);/*此顯示信息只為說明職工已按編號排序，該部分可刪除*/printf("-n");printf("No.tworker'agettworker'namen");for(i=0;i<n;i+)printf("%dt%dttt%sn",(F1+i*sizeof(WORKERBASIC)->No,(F1+i*sizeof(WORKERBASIC)->

19、age,(F1+i*sizeof(WORKERBASIC)->name);printf("-n");printf("nPlease input a number you want to search: ");scanf("%d",&num);getchar();low=0;/*折半法*/high=n-1;while(low<=high)&&(flag=0)mid=(low+high)/2;if (num>(F1+mid*sizeof(WORKERBASIC)->No)low=mid+1;

20、else if (num<(F1+mid*sizeof(WORKERBASIC)->No)high=mid-1;else if (num=(F1+mid*sizeof(WORKERBASIC)->No)flag=1;if (flag=0)printf("can not find the worker!n");elseprintf("-n");printf("No.tworker'agettworker'namen");printf("%dt%dttt%sn",(F1+mid*siz

21、eof(WORKERBASIC)->No,(F1+mid*sizeof(WORKERBASIC)->age,(F1+mid*sizeof(WORKERBASIC)->name);printf("-n");PrintPause();return 0;int EditByName(WORKERBASIC *F1,int n)/*按姓名查找*/char str20;int i,j,k,flag=0,low,high,mid;for(i=0;i<n-1;i+)/*排序*/k=i;for(j=i+1;j<n;j+)if (strcmp( (F1+k*si

22、zeof(WORKERBASIC)->name, (F1+j*sizeof(WORKERBASIC)->name )>0)k=j;if (k!=i)exchange(F1+i*sizeof(WORKERBASIC),(F1+k*sizeof(WORKERBASIC);/*此顯示信息只為說明職工已按名字排序，該部分可刪除*/printf("-n");printf("No.tworker'agettworker'namen");for(i=0;i<n;i+)printf("%dt%dttt%sn",

23、(F1+i*sizeof(WORKERBASIC)->No,(F1+i*sizeof(WORKERBASIC)->age,(F1+i*sizeof(WORKERBASIC)->name);printf("-n");printf("nPlease input a worker you want to exactly search: ");scanf("%s",str);getchar();low=0;/*折半法*/high=n-1;while(low<=high)&&(flag=0)mid=(lo

24、w+high)/2;if (strcmp( str, (F1+mid*sizeof(WORKERBASIC)->name )>0)low=mid+1;else if (strcmp( str, (F1+mid*sizeof(WORKERBASIC)->name )<0)high=mid-1;else if (strcmp( str, (F1+mid*sizeof(WORKERBASIC)->name )=0)flag=1;if (flag=0)printf("can not find the worker!n");elseprintf(&quo

25、t;-n");printf("No.tworker'agettworker'namen");printf("%dt%dttt%sn",(F1+mid*sizeof(WORKERBASIC)->No,(F1+mid*sizeof(WORKERBASIC)->age,(F1+mid*sizeof(WORKERBASIC)->name);printf("-n");PrintPause();return 0;int EditByage(WORKERBASIC *F1,int n)/*按年齡查找*/i

26、nt a,flag=0,i;printf("-n");printf("No.tworker'agettworker'namen");for(i=0;i<n;i+)printf("%dt%dttt%sn",(F1+i*sizeof(WORKERBASIC)->No,(F1+i*sizeof(WORKERBASIC)->age,(F1+i*sizeof(WORKERBASIC)->name);printf("-n");printf("nPlease input work

27、er'age: ");scanf("%d",&a);getchar();for(i=0;i<n;i+)if (a=(F1+i*sizeof(WORKERBASIC)->age)if(flag=0)printf("-n");printf("No.tworker'agettworker'namen");flag=1;printf("%dt%dttt%sn",(F1+i*sizeof(WORKERBASIC)->No,(F1+i*sizeof(WORKERBAS

28、IC)->age,(F1+i*sizeof(WORKERBASIC)->name);if (flag=0)printf("can not find the worker!n");elseprintf("-n");PrintPause();return 0;int Edit()/*查找*/WORKERBASIC load,*F1;int n=0,key=0,i;FILE *fp=NULL;cleanscreen();if (fp=fopen("wenjian.txt","rb")=NULL)printf(

29、"can not find wenjian!n");PrintPause();return 0;while(!feof(fp)/*統計職工的數量*/if (fread(&load,sizeof(WORKERBASIC),1,fp)=1)n+;fclose(fp);if (n=0)printf("No information of worker!n");PrintPause();return 0;F1=(WORKERBASIC *)malloc(n*sizeof(WORKERBASIC);/*按職工的人數申請內存空間*/fp=fopen("

30、;wenjian.txt","rb");for(i=0;i<n;i+)if (fread(F1+i*sizeof(WORKERBASIC),sizeof(WORKERBASIC),1,fp)!=1)printf("read failed!n");PrintPause();return 0;fclose(fp);while(key!=ESC)clrscr();printf("Please select search method:n");printf("-n");printf("1t=By

31、No.n");printf("2t=By Name.n");printf("3t=By age.n");printf("Esct=Exitn");printf("-n");printf("Press 1 2 3 or Esc?n");key=getch();switch(key)case '1':key=EditByNo(F1,n);break;case '2':key=EditByName(F1,n);break;case '3':ke

32、y=EditByage(F1,n);break;free(F1);return 0;int Modify()/*修改*/WORKER *head=NULL,*t=NULL,*load=NULL;FILE *fp=NULL;char str20;int num;cleanscreen();load=(WORKER *)malloc(sizeof(WORKER);if(fp=fopen("wenjian.txt","rb")=NULL)printf("can not find wenjian!n");PrintPause();return

33、 0;head=t=load;if (fread(load,sizeof(WORKERBASIC),1,fp)!=1)printf("load failed!n");PrintPause();return 0;while(!feof(fp)load=(WORKER *)malloc(sizeof(WORKER);t->next=load;if (fread(load,sizeof(WORKERBASIC),1,fp)!=1)break;t=load;t->next=NULL;/*創建鏈表完成*/fclose(fp);t=head;Scan();printf(&q

34、uot;nWhich worker do you want to modify?n");printf("Please input the No. age. or name: ");scanf("%s",str);getchar();num=atoi(str);/*把字符串轉換為長整型數*/if (strcmp(t->,str)=0)|(num=t->workerinfo.No)|(num=t->workerinfo.age)printf("nPlease input the new No

35、. ");scanf("%d",&t->workerinfo.No);getchar();printf("nPlease input the new age. ");scanf("%d",&t->workerinfo.age);getchar();printf("nPlease input the new name: ");scanf("%s",t->);getchar();printf("Modify Succ

36、ess!n");fp=fopen("wenjian.txt","wb");t=head;if (head!=NULL)fwrite(t,sizeof(WORKERBASIC),1,fp);while(t->next!=NULL)t=t->next;if(fwrite(t,sizeof(WORKERBASIC),1,fp)!=1)printf("add failed!n");PrintPause();break;free(head);fclose(fp);PrintPause();return 0;/*存入文件(目

37、標在首地址）*/while(t->next!=NULL)t=t->next;if (strcmp(t->,str)=0)|(num=t->workerinfo.No)|(num=t->workerinfo.age)printf("nPlease input the new No. ");scanf("%d",&t->workerinfo.No);getchar();printf("nPlease input the new age. ");scanf("

38、;%d",&t->workerinfo.age);getchar();printf("nPlease input the new name: ");scanf("%s",t->);getchar();printf("Modify Success!n");fp=fopen("wenjian.txt","wb");t=head;if (head!=NULL)fwrite(t,sizeof(WORKERBASIC),1,fp);while(t

39、->next!=NULL)t=t->next;if(fwrite(t,sizeof(WORKERBASIC),1,fp)!=1)printf("add failed!n");PrintPause();break;/*存入文件（當不在首地址的時候）*/free(head);fclose(fp);PrintPause();return 0;printf("Input Wrong!n");PrintPause();return 0;int Delete()/*刪除*/WORKER *head=NULL,*t=NULL,*load=NULL,*b=N

40、ULL;FILE *fp=NULL;int num;char str20,ch;cleanscreen();load=(WORKER *)malloc(sizeof(WORKER);if(fp=fopen("wenjian.txt","rb")=NULL)printf("can not find wenjian!n");PrintPause();return 0;head=t=load;if (fread(load,sizeof(WORKERBASIC),1,fp)!=1)printf("load failed!n"

41、;);PrintPause();return 0;while(!feof(fp)load=(WORKER *)malloc(sizeof(WORKER);t->next=load;if (fread(load,sizeof(WORKERBASIC),1,fp)!=1)break;t=load;t->next=NULL;fclose(fp);t=head;Scan();printf("nWhich worker do you want to delete?n");printf("Please input the No. age or name: &quo

42、t;);scanf("%s",str);getchar();num=atoi(str);if (strcmp(t->,str)=0)|(num=t->workerinfo.No)|(num=t->workerinfo.age)printf("nDo you really want to delete %s?(Press 'y' to sure)n",t->);if (ch=getch()!='y')return 0;head=t->n

43、ext;free(t);printf("Delete Success!n");fp=fopen("wenjian.txt","wb");t=head;if (head!=NULL)fwrite(t,sizeof(WORKERBASIC),1,fp);while(t->next!=NULL)t=t->next;if(fwrite(t,sizeof(WORKERBASIC),1,fp)!=1)printf("add failed!n");PrintPause();break;free(head);fclos

44、e(fp);PrintPause();return 0;while(t->next!=NULL)t=b;t=t->next;if (strcmp(t->,str)=0)|(num=t->workerinfo.No)|(num=t->workerinfo.age)printf("nDo you really want to delete %s?(Press 'y' to sure)n",t->);if (ch=getch()!='y')return

45、0;b->next=t->next;free(t);printf("Delete Success!n");fp=fopen("wenjian.txt","wb");t=head;if (head!=NULL)fwrite(t,sizeof(WORKERBASIC),1,fp);while(t->next!=NULL)t=t->next;if(fwrite(t,sizeof(WORKERBASIC),1,fp)!=1)printf("add failed!n");PrintPause();br

46、eak;free(head);fclose(fp);PrintPause();return 0;b=b->next;printf("Input Wrong!n");PrintPause();return 0;int Into() /*鏈表插入*/WORKER *head=NULL,*t=NULL,*load=NULL,*b=NULL,*a=NULL;FILE *fp=NULL;int num;char str20,ch;cleanscreen();load=(WORKER *)malloc(sizeof(WORKER);if(fp=fopen("wenjia

47、n.txt","rb")=NULL)printf("can not find wenjian!n");PrintPause();return 0;head=t=load;if (fread(load,sizeof(WORKERBASIC),1,fp)!=1)printf("load failed!n");PrintPause();return 0;while(!feof(fp)load=(WORKER *)malloc(sizeof(WORKER);t->next=load;if (fread(load,sizeof(

48、WORKERBASIC),1,fp)!=1)break;t=load;t->next=NULL;fclose(fp);t=head;Scan();a=(WORKER *)malloc(sizeof(WORKER);printf("ninput new worker's No.");scanf("%d",&a->workerinfo.No);getchar();printf("nPlease input the new age. ");scanf("%d",&a->worke

49、rinfo.age);getchar();printf("input new worker's name:");scanf("%s",a->);getchar();printf("nwhere do you want to add?n");printf("Please input the No. age. or name: ");scanf("%s",str);getchar();num=atoi(str);if (strcmp(t->worke

50、,str)=0)|(num=t->workerinfo.No)|(num=t->workerinfo.age)printf("nDo you really want to add before %s?(Press 'y' to sure)n",t->);if (ch=getch()!='y')return 0;a->next=t;printf("Into Success!n");fp=fopen("wenjian.txt",&qu

51、ot;wb");head=t=a;if (head!=NULL)fwrite(t,sizeof(WORKERBASIC),1,fp);while(t->next!=NULL)t=t->next;if(fwrite(t,sizeof(WORKERBASIC),1,fp)!=1)printf("add failed!n");PrintPause();break;free(head);fclose(fp);PrintPause();return 0;while(t->next!=NULL)t=t->next;if (strcmp(t->,str)=0)|(num=t->workerinfo.No)|(num=t->workerinfo.age)printf("nDo you really want to add after %s?(Press 'y