学生成绩管理系统+++数据结构课程设计

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1、算法与数据结构课程设计综合实验课程设计名称：学生成绩管理系统业：计算机科学与技术学生成绩管理系统一、 问题的描述和分析1.1问题的描述随着社会的发展和经济时代的到来，管理信息系统在各行各业都越来越重要，特别是教育 事业。在经济发达的国家，许多教育机构（如公办、私立、培训机构等），都投入了大量的资 金开发MIS系统，以求在将来激烈的竞争中立于不败之地。在我国，民办教育是新兴的一个行业, 是随着改革开放和市场经济的发展根据中国特有的国情发展起来的，特别是中国民办教育促进 法的出台，从一定的程度上规范和促进了中国民办教育的发展，这是一个很有发展前途的新兴 产业，但是同发达国家相比，我国的民办教育行业

2、的信息技术的应用程度还很低，只有在大城 市中发展较早、规模较大的民办院校中才使用计算机进行大规模操作，从各方面提高工作效率， 取得良好的社会和经济效益，而一些新兴的、规模较小的民办机构还没有全部具备这种功能。 因此可见，随着我国民办教育的迅速发展，信息技术在其上的应用会更加地广泛和深入。1.2现有系统存在问题的分析有的学校根本就没有系统，还是手工操作计算机日新月异的发展，但是有的领导只见眼前利 益，不关心，甚至不敢尝试新兴的事物。手工操作还十分落后，效率极低，成本很大，以后的 社会是信息的社会，信息只有快，准，精才能发挥其价值。所以机器代替人力是必然的历史发展趋势，只有领导的重视和支持才能从人

3、工操作改为计算 机的自动化系统。人工操作必将被计算机代替。有些学校虽使用了计算机，甚至管理系统，但是仍然存在很多问题，问题一日不解决，效率 就一日提不上去。还有，有的系统很不完善到处是漏洞，可以说是千疮百孔，这样极不完善的系统能有保障吗？ 所以制作一个完善的学生管理系统是必不可少的。二、数据结构的设计struct personchar name20;long num;float math;float English;float chinese;float average;float sum;student;三、模块：学生成绩管理系统模块四、算法的设计1. 在此成绩管理系统中，要求用户输入的只是

4、有字符型和数值型数据，所以我设计了下面函数来处理并对输出的数据进行检验。int N=0;Enter()FILE *fp;char ch;char ch2;char numstr20;struct person student2;clrscr();fp=fopen(jie.txt,ab);if(fp=NULL)printf(cant open thisfile.n);printf(wait for a second withpatience.nthe system is exiting.n);getch();exit(0);elsedoprintf(your name:); gets(stude

5、nt.name); printf(nyour num:); gets(numstr);student.num=atol(numstr); printf(nyour math:); gets(numstr);student.math=atof(numstr);printf(nyourEnglish:);2. 查询学生记录gets(numstr);student.English=atof(numstr);printf(nyourchinese:);gets(numstr);student.chinese=atof(numstr);student.sum=student.chinese+studen

6、t.math+student.English;student.average=student.sum/3;fwrite(&student,sizeof(structperson),1,fp);N+;printf(Do you continueadding other students(Y/N)?n);ch=getchar();getchar();while(ch=y|ch=Y);printf(Show all(Y/N)?n);ch2=getchar();getchar();if(ch2=y|ch2=Y)Listall();fclose(fp);return_confirm();clrscr()

7、;当用户执行此查询任务时，系统会提示用户进行查询字段的选择，即按学号或按姓名进行查询。若此学生记录存在，则会打印输出此学生记录的信息。Search()char choice; char ch1;char ch2;char ch3;char ch4;char name20;long num; char numstr20; clrscr();printf(*WAYS OF SEARCHING*n);printf(n)printf(*1.name*n);printf(*2.num*n);printf(n);printf(give your choice:n); choice=getchar(); g

8、etchar();while(choice2|choice1) printf(Sorry.your choice is wrong.nplease give a correct one:n); choice=getchar(); getchar();3. 根据姓名或学号进行查找 switch(choice)case 1:doLoop1:printf(input the name of students you want to search:n);gets(name);Search1(name);printf(GO ON SEARCHING BY NAEM(Y/N)?n);ch2=getchar

9、();getchar();while(ch2= y|ch2=Y);printf(Search by other ways(Y/N)?n);ch3=getchar(); getchar();if(ch3=y|ch3=Y)goto Loop2; break;case 2:doLoop2:printf(input the num of students you want to search:n);gets(numstr);num=atol(numstr);Search2(num); printf(GO ON SEARCHING BY NUM(Y/N)?n);ch1=getchar();getchar

10、(); while(ch1=y| ch1=Y);Search2(long num)FILE *fp;char ch;int flag=0;int t; clrscr(); fp=fopen(jie.txt,rb); if(fp=NULL) printf(cant open this file.n);printf(wait for a second with patience.nthe system is exiting.n);getch();exit(0);elseflag=0; t=0;while(fread(&student,sizeof(struct person),1,fp)if(nu

11、m=student.num)printf(namettnumtchinesetEnglisht mathsumtaveragen);printf(%-10s%-6ld%-8.2f%-8.2f%-8.2f%-8 .2f%-8.2fn,student.name,student.num,s tudent.chinese,student.English,student. math,student.sum,student.average);t=1; break; if(t=0) printf(Sorry.the student you are searching not existed.n);rewin

12、d(fp); fclose(fp);Search1(char *name)FILE *fp;char ch;int flag=0;int t; clrscr();fp=fopen(jie.txt,rb); if(fp=NULL) printf(cant open this file.n);printf(wait for a second with patience.nthe system is exiting.n);getch();exit(0);elseflag=0;t=0;while(fread(&student,sizeof(struct person),1,fp)if(strcmp(n

13、ame,student.name)=0)printf(namettnumtchinesetEnglisht mathsumtaveragen);printf(%-10s%-6ld%-8.2f%-8.2f%-8.2f%-8 .2f%-8.2fn,student.name,student.num,s tudent.chinese,student.English,student. math,student.sum,student.average);t=1; break;if(t=0) printf(Sorry.the student you are searching not existed.n);

14、rewind(fp);fclose(fp);Delete()FILE *fp;struct person student130,student230;int i;int k;int j;int flag;char ch1;char name20;char ch;char ch2;clrscr();fp=fopen(jie.txt,rb+);if(fp=NULL) printf(cant open this file.n);printf(wait for a second with patience.nthe system is exiting.n);getch();exit(0); else

15、do i=0; j=0; flag=0; printf(input the name of students you are going to delete.n); scanf(%s,name);while(fread(&student,sizeof(struct person),1,fp)=1)if(strcmp(name,student.name)!=0)student2j=student;j+;else flag=1;printf(nametttnumtchinesettEngli shttmathtsumtaveragen);printf(%-10s%-6ld%8.2f%8.2f%8.

16、2f%8.2f%8.2fn,student.name,student.num,studen t.chinese,student.English,student.math, student.sum,student.average);printf(Delete(Y/N)?n); ch1=getchar(); getchar(); toupper(ch); if(ch=N) goto Loop;printf(j=%dn,j); k=j;i=0; fclose(fp); if(flag=0) printf(Sorry.the student you are searching not existed.

17、n);if(flag=1)printf(Congratulation!you succeedn);fp=fopen(jie.txt,wb+); if(fp=NULL) printf(cant open this file.n);printf(wait for a second with patience.nthe system is exiting.n);getch();exit(0);elsei=0; dofwrite(&student2i,sizeof(struct person),1,fp);i+;while(i6|ch1)printf(Sorry.you put is wrong.np

18、lease input another choice:n);ch=getchar();getchar(); switch(ch) case,1, / 、1:ass_revise(name);gets(student.name);break;case，C，/、2:ass_revise(num);gets(numstr);student.num=atol(numstr);break;case 3:ass_revise(math);gets(numstr);student.math=atof(numstr);break;case 4:ass_revise(English);gets(numstr);

19、student.English=atof(numstr);break;case 5:ass_revise(chinese);gets(numstr);student.chinese=atof(numstr);break;case 6:ass_revise(total);gets(student.name);ass_revise(num);gets(numstr); student.num=atol(numstr); ass_revise(math);gets(numstr); student.math=atof(numstr); ass_revise(English);gets(numstr)

20、;student.English=atof(numstr); ass_revise(chinese);gets(numstr); student.chinese=atof(numstr);student.sum=student.chinese+student.mat h+student.English;student.average=student.sum/3; printf(Continue revising the same student(Y/N)?n);ch1=getchar();getchar();while(ch=y|c h=Y);fseek(fp,-offset,1); fwri

21、te(&student,sizeof(struct person),1,fp);printf(thefollowing is information of student had been revised:n);printf(namettnumtmathtchinesetEng lishtsumtaveragen);printf(%-10s%-6ld%8.2f%8.2f%8.2f%8.2f%8.2fn,student.name,student.num,studen t.chinese,student.English,student.math, student.sum,student.avera

22、ge);printf(Congratulation!you succeedn);break;while(fread(&student,sizeof(struct person),1,fp);rewind(fp);if(flag=0)printf(Sorry.the student of reving not existed.n);printf(GO ONRevising(Y/N)?n);ch1=getchar();getchar(); if(ch1=y|ch1=Y)goto again;fclose(fp);return_confirm();clrscr();5. 对学生记录进行排序Order

23、()FILE *fp;char ch;char ch2;int k;float a30,b30,c30,d30;struct person student130;int i;char ch1;fp=fopen(jie.txt,rb);if(fp=NULL)printf(cant open thisfile.n);printf(wait for a second with patience.nthe system is exiting.n);getch();exit(0);rewind(fp);i=0;while(fread(&student1i,sizeof(struct person),1,

24、fp)i+;k=i;dofor(i=0;ik;i+)ai=student1i.math;bi=student1i.English;ci=student1i.chinese;di=student1i.average; printf( *WAYS OF ORDER* n);printf(=n); printf(*1.math2.English*n);printf(*3.chinese4.average*n);printf(=n); printf(please give a choice:n); ch=getchar();getchar(); while(ch4)printf(Sorry.the d

25、ate you input is wrong.nplease give another choice:n);ch=getchar();getchar();switch(ch)case 1:Order1(a);break;case 2:Order1(b);break;case 3:Order1(c);break;case 4:Order1(d);break;printf(Congratulation!yousucceedn);printf(Go on ordering(Y/N)?n);ch1=getchar();getchar();while(ch1=y|ch=Y);printf(Show al

26、l(Y/N)?n);ch2=getchar();getchar();if(ch2=y|ch2=Y)rewind(fp);printf(nametttnumtchinesettEngli shttmathtsumtaveragen);while(fread(&student,sizeof(structperson),1,fp)printf(%-10s%-6ld%8.2f%8.2f%8.2f%8.2f% 8.2fn,student.name,student.num,studen t.chinese,student.English,student.math, student.sum,student.

27、average);fclose(fp);return_confirm();Order1(float *p) FILE *fp;int i=0;int k;int j;struct person student2;fp=fopen(jie.txt,r+); if(fp=NULL) printf(cant open this file.n);printf(wait for a second with patience.nthe system is exiting.n);getch();exit(0); else while(fread(&student1i,sizeof(struct person

28、),1,fp)i+;k=i;i=0; while(ik) for(j=i+1;jk;j+) if(pipj) student2=student1i;student1i=student1j; student1j=student2;i+; rewind(fp); for(i=0;i2|choice1)printf(Sorry.your choice is wrong.nplease give a correct one:n); choice=getchar();getchar(); switch(choice) case 1:doLoop1: printf(input the name of st

29、udents you want to search:n); gets(name);Search1(name); printf(GO ON SEARCHING BY NAEM(Y/N)?n); ch2=getchar();getchar(); while(ch2=y|ch2=Y); printf(Search by other ways(Y/N)?n); ch3=getchar();getchar(); if(ch3=y|ch3=Y) goto Loop2;break;case 2:doLoop2: printf(input the num of students you want to sea

30、rch:n); gets(numstr);num=atol(numstr); Search2(num);printf(GO ON SEARCHING BY NUM(Y/N)?n); ch1=getchar();getchar(); while(ch1=y|ch1=Y);Search2(long num)FILE *fp;char ch;int flag=0;int t;clrscr();fp=fopen(jie.txt,rb);if(fp=NULL)printf(cant open this file.n); printf(wait for a second with patience.nth

31、e system is exiting.n); getch();exit(0);elseflag=0;t=0; while(fread(&student,sizeof(struct person),1,fp) if(num=student.num)printf(namettnumtchinesetEnglishtmathsumtaveragen);printf(%-10s%-6ld%-8.2f%-8.2f%-8.2f%-8.2f%-8.2fn,student.name,student.num,stude nt.chinese,student.English,student.math,stude

32、nt.sum,student.average);t=1;break;if(t=0)printf(Sorry.the student you are searching not existed.n); rewind(fp); fclose(fp);Search1(char *name)FILE *fp;char ch;int flag=0;int t;clrscr();fp=fopen(jie.txt,rb);if(fp=NULL)printf(cant open this file.n); printf(wait for a second with patience.nthe system i

33、s exiting.n); getch();exit(0);elseflag=0;t=0;while(fread(&student,sizeof(struct person),1,fp) if(strcmp(name,student.name)=0)printf(namettnumtchinesetEnglishtmathsumtaveragen);printf(%-10s%-6ld%-8.2f%-8.2f%-8.2f%-8.2f%-8.2fn,student.name,student.num,stude nt.chinese,student.English,student.math,stud

34、ent.sum,student.average);t=1;break;if(t=0)printf(Sorry.the student you are searching not existed.n); rewind(fp);fclose(fp);Delete()FILE *fp;struct person student130,student230;int i;int k;int j;int flag;char ch1;char name20;char ch;char ch2;clrscr();fp=fopen(jie.txt,rb+);if(fp=NULL)printf(cant open

35、this file.n);printf(wait for a second with patience.nthe system is exiting.n); getch();exit(0);elsedoi=0;j=0;flag=0;printf(input the name of students you are going to delete.n); scanf(%s,name);while(fread(&student,sizeof(struct person),1,fp)=1) if(strcmp(name,student.name)!=0) student2j=student; j+;

36、else flag=1;printf(nametttnumtchinesettEnglishttmathtsumtaveragen);printf(%-10s%-6ld%8.2f%8.2f%8.2f%8.2f%8.2fn,student.name,student.num,student.ch inese,student.English,student.math,student.sum,student.average);printf(Delete(Y/N)?n); ch1=getchar();getchar(); toupper(ch); if(ch=N) goto Loop;printf(j=

37、%dn,j);k=j;i=0;fclose(fp);if(flag=0) printf(Sorry.the student you are searching not existed.n);if(flag=1) printf(Congratulation!you succeedn);fp=fopen(jie.txt,wb+);if(fp=NULL) printf(cant open this file.n);printf(wait for a second with patience.nthe system is exiting.n); getch();exit(0);elsei=0;dofw

38、rite(&student2i,sizeof(struct person),1,fp); i+;while(i6|ch1)printf(Sorry.you put is wrong.nplease input anotherchoice:n);ch=getchar();getchar();switch(ch),1, / 、case 1:ass_revise(name);gets(student.name);break;，C，/、case 2:ass_revise(num);gets(numstr);student.num=atol(numstr);break;case 3:ass_revise

39、(math);gets(numstr);student.math=atof(numstr);break;case 4:ass_revise(English);gets(numstr);student.English=atof(numstr);break;case 5:ass_revise(chinese); gets(numstr); student.chinese=atof(numstr); break;case 6:ass_revise(total);gets(student.name);ass_revise(num); gets(numstr); student.num=atol(num

40、str); ass_revise(math);gets(numstr);student.math=atof(numstr); ass_revise(English); gets(numstr);student.English=atof(numstr); ass_revise(chinese);gets(numstr); student.chinese=atof(numstr); student.sum=student.chinese+student.math+student.English; student.average=student.sum/3;printf(Continue revising the same student(Y/N)?n); ch1=getchar();getchar();while(ch=y|ch=Y);fseek(fp,-offset,1);fwrite(&student,sizeof(struct person),1,fp);printf(the following is information of student had been revised:n