//last#include〈stdio。h〉include〈string.h〉#include〈stdlib.h〉include<conio.h>#define HEADER1 STUDENT \n"defineHEADER2” |numberInameIsexI\n"defineHEADERS” | I I I\n”defineFORMAT”姓名:%-6s\n性別：%-6s\n學(xué)號(hào):%-6s\n\n”#define END \n"#defineDATAtemp.Name,temp。Num,temp。Sextypedefstruct_Student{charName[12]；charSex[4]；charNum[20];}Student;voidMenu(FILE*)；voidLuRu(FILE*)；voidSeekStudent(FILE*)；voidQingKong(FILE*)；voidJiaMi(char*,int);voidJieMi(char*,int)；voidDelete(FILE*)；voidUpDate(FILE*)；voidJudgeFP(FILE*)；intFileSize(FILE*)；voidDisPlay(FILE*fp);intmain(){FILE*fp;intchoice;fp=fopen("student.txt","ab+")；JudgeFP(fp)；fp=fopen("student.txt"，"rb+")；JudgeFP(fp)；if(fp==NULL){printf("ERROR!\n")；exit(0)；)while(1){system("cls");Menu(fp)；scanf("%d”,&choice);switch(choice){case0:break；case1：LuRu(fp)；break；case2：SeekStudent(fp);break;case3：QingKong(fp)；break；case4：Delete(fp)；break；case5：UpDate(fp)；break；case6:DisPlay(fp);break;default：printf("輸入錯(cuò)誤\n”)；)if(choice==0)break；printf("任意鍵返回主菜單");getch()；fflush(stdin)；)fclose(fp)；return0;)voidLuRu(FILE*fp)〃錄入{Studenttemp；charch;do{printf("姓名:")；scanf("%s",temp.Name)；printf("性別:")；scanf("%s",temp。Sex);printf("編號(hào):”scanf("%s",tempoNum)；fseek(fp,0L,SEEK_END)；//JiaMi((char*)&temp,sizeof(Student));fwrite(&temp,sizeof(Student),1,fp)；printf("任意鍵繼續(xù)錄入0跳出\n");fflush(stdin)；}while((ch=getch())!=’0’)；)voidQingKong(FILE*fp)//清空數(shù)據(jù){if((fp=fopen("student。txt","wb"))==NULL)(printf("ERROR!\n")；return;)printf("數(shù)據(jù)已清空\n”);}voidSeekStudent(FILE*fp)〃查詢{Studenttemp；charin[20]；inti=0,j；printf("輸入姓名或者學(xué)號(hào)查詢：\n”)；scanf("%s",in);rewind(fp)；for(j=0;j(FileSize(fp)；j++)(while(!feof(fp))(fseek(fp,j*sizeof(Student),SEEK_SET);fread(&temp,sizeof(Student),1,fp);break；)//JieMi((char*)&temp,sizeof(Student))；if(strcmp(in,temp.Name)==0I|strcmp(in,temp.Num)==0)(printf(FORMAT,DATA}i=1;))if(i==0)printf("沒找到\n")；)voidDelete(FILE*fp)//刪除{Studenttemp, del；Studentblank={"0","0","0"};charin[20];intmycount=0,i=0,j;if(FileSize(fp)==0){printf("無記錄可刪\n”)；return；)if(FileSize(fp)==1){QingKong(fp);printf("刪除成功\n”)；return；}printf("輸入要?jiǎng)h除的學(xué)號(hào)或者姓名：”)；scanf("%s", in)；fseek(fp, (FileSize(fp)—1)*sizeof(Student),SEEK_SET);fread(&temp,sizeof(Student), 1,fp)；rewind(fp)；for(j=0;j<FileSize(fp)；j++){while(!feof(fp)){fseek(fp,j*sizeof(Student), SEEK_SET);fread(&del,sizeof(Student),1,fp)；mycount++；break;)if(strcmp(in,del.Num)==0IIstrcmp(in,del。Name)==0){printf(FORMAT,del。Name,del。Num,del。Sex)；fseek(fp, (mycount-1)*sizeof(Student),SEEK_SET);fwrite(&temp,sizeof(Student),1,fp)；fseek(fp, (FileSize(fp)—1)*sizeof(Student),SEEK_SET)；fwrite(&blank,sizeof(Student), 1,fp)；printf("刪除成功\n");i=1;break;))if(i==0)printf("刪除失敗\n")；)voidUpDate(FILE*fp)〃修改記錄{Studenttemp；charin[20]；intmycount=0,i=0, j,k;if(FileSize(fp)==0)(printf("無記錄可修改\n”)；return；)if(FileSize(fp)==1){QingKong(fp);printf("刪除成功\n")；return;)printf("輸入要修改的學(xué)號(hào)或者姓名:“)；scanf("％s",in)；rewind(fp)；for(j=0；j〈FileSize(fp);j++)(while(!feof(fp)){mycount++；fseek(fp,j*sizeof(Student),SEEK_SET);fread(&temp,sizeof(Student), 1,fp);break；)if(strcmp(in,temp。Num)==0|Istrcmp(in,temp。Name)==0){printf(FORMAT,DATA)printf("請(qǐng)選擇修改位置:1姓名2學(xué)號(hào)3性別4都修改0放棄修改\n")；scanf("%d",&k);fflush(stdin)；while(1){if(k==0){printf("成功放棄修改\n")；return；}if(k>0&&k〈5)break；printf("輸入錯(cuò)誤，請(qǐng)重新輸入：\n")；scanf(”%d”,&k);fflush(stdin);)if(k==1)(printf("姓名：");scanf("%s",tempoName)；)if(k==2){printf("學(xué)號(hào):")；scanf("%s”,temp.Num)；)if(k==3){printf("性別:")；scanf("%s”,tempoSex)；)if(k==4){printf("姓名:“)；scanf("%s"，temp.Name)；printf("學(xué)號(hào)：")；scanf("%s"，tempoNum);printf("性別:");scanf("%s",temp.Sex);}fseek(fp, (mycount-1)*sizeof(Student),SEEK_SET)；fwrite(&temp,sizeof(Student),1,fp)；printf("修改成功\n")；=1；//break；))if(i==0)printf("修改失敗\n")；)intFileSize(FILE*fp)〃人數(shù)統(tǒng)計(jì)(intbegin,end,filesize；fseek(fp,0,SEEK_SET);begin=ftell(fp);fseek(fp,0,SEEK_END)；end=ftell(fp)；filesize=(end—begin)/sizeof(Student)；returnfilesize;)voidJiaMi(char*p, intsize){inti；for(i=0； i<=size； i++)(%p=~(*p)；p++;))voidJieMi(char*p, intsize){inti；for(i=0;i<=size;i++){*p=?(*p);p++;))voidJudgeFP(FILE*fp){if(fp==NULL){printf("ERROR!\n")；exit(0)；))voidMenu(FILE*fp)〃菜單(printf("\t\t\t學(xué)生信息管理系統(tǒng)歡迎您\n”)；printf("\2\21.錄入數(shù)據(jù)\n");printf("\t\t\t\t2.查詢信息\n”)；printf("\t\t\t\t3.清空數(shù)據(jù)\n");printf("\t\t\t\t4.刪除個(gè)人\n")；printf("\t\t\t\t5。修改個(gè)人\n")；printf("\t\t\t\t6。全部打印\n”)；printf("\t\t\t\t0。退出系統(tǒng)\n”)；printf("count:%d\n",