C語言學生選課系統(tǒng)

1、#include<stdio.h>#include<stdlib.h>#include<string.h>intN1,N2;structstudentintnum2;charname220;intnelenum50;/intnelen;/structstudent*next;structcourseintnuml;/課程編號charname120;charmajor20;chartype20;intcredit;intperiod;charteacher20;intpeople;/structcourse*next;/;structcourse*headl;

2、structstudent*head2;voidzhang()/structcourse*p1,*p2;所選課程編號所選課程學分和選此門課程的人數(shù)結構體指針從鍵盤錄入課程信息N1=0;p1=p2=(structcourse*)malloc(sizeof(structcourse);printf(-課程編號t課程名稱t主修t課程性質t學分t課時t教師n");scanf("%d%s%s%s%d%d%s",&p1->num1,p1->name1,p1->major,p1->type,&p1->credit,&p1-&

3、gt;period,p1->teacher);p1->people=0;head1=NULL;while(p1->num1!=0)N1=N1+1;if(N1=1)head1=p1;elsep2->next=p1;p2=p1;p1=(structcourse*)malloc(sizeof(structcourse);scanf("%d%s%s%s%d%d%s",&p1->num1,p1->name1,p1->major,p1->type,&p1->credit,&p1->period,p1-&

4、gt;teacher);p1->people=0;p2->next=NULL;voidzhang1()/從文件錄入課程信息FILE*fp;charfilepath20;structcourse*p1,*p2;N1=0;printf(-請輸入您要讀取的路徑：")；getchar();gets(filepath);if(fp=fopen(filepath,"r")=NULL)(printf("找不到%s文件!n",filepath);exit(0);p1=p2=(structcourse*)malloc(sizeof(structcou

5、rse);fscanf(fp,"%d%s%s%s%d%d%s%d",&p1->num1,p1->name1,p1->major,p1->type,&p1->credit,&p1->period,p1->teacher,&p1->people);while(!feof(fp)(N1=N1+1;if(N1=1)head1=p1;elsep2->next=p1;p2=p1;p1=(structcourse*)malloc(sizeof(structcourse);fscanf(fp,"

6、%d%s%s%s%d%d%s%d",&p1->num1,p1->name1,p1->major,p1->type,&p1->credit,&p1->period,p1->teacher,&p1->people);p2->next=NULL;voidload()/錄入課程信息函數(shù)(inti;printf("ttt錄入課程信息n");printf("n1.從鍵盤錄入");printf("n2.從文件錄入");printf("n3.返回

7、主菜單n");printf("請選擇1-3:");scanf(”d”,&i);switch(i)(case1:zhang();break;case2:zhang1();break;case3:break;voidinsert(structcourse*incourse)/增加課程信息(structcourse*p0,*p1,*p2;p1=head1;p0=incourse;if(head1=NULL)(head1=p0;p0->next=NULL;else(while(p0->num1>p1->num1)&&(p1-

8、>next!=NULL)(p2=p1;p1=p1->next;if(p0->num1<=p1->num1)(if(head1=p1)head1=p0;elsep2->next=p0;p0->next=p1;else(p1->next=p0;p0->next=NULL;N1=N1+1;voiddelc(intnum1)/刪除課程信息(structcourse*p1,*p2;if(head1=NULL)(printf("n無法刪除!n");gotoend;p1=head1;while(num1!=p1->num1&am

9、p;&p1->next!=NULL)(p2=p1;p1=p1->next;if(num1=p1->num1)(if(p1=head1)head1=p1->next;elsep2->next=p1->next;printf("已刪除n");N1=N1-1;elseprintf("沒有此課程n");end:;voidmanagementc()/課程信息管理函數(shù)(structcourse*p1;inti,num1;printf("ttt課程信息管理n");printf("1.添加課程n&

10、quot;);printf("2.刪除課程n");printf("3.返回n");printf("請輸入1-3:n");scanf("%d",&i);switch(i)(case1:p1=(structcourse*)malloc(sizeof(structcourse);printf(-課程編號t課程名稱t主修t課程性質t學分t課時t教師n");scanf("%d%s%s%s%d%d%s",&p1->num1,p1->name1,p1->major,

11、p1->type,&p1->credit,&p1->period,p1->teacher);p1->people=0;insert(p1);break;case2:printf("請輸入您要刪除的課程編號:n");scanf("%d",&num1);delc(num1);break;case3:break;voidputin(void)/從鍵盤錄入學生信息(inti;structstudent*p1,*p2;N2=0;p1=p2=(structstudent*)malloc(sizeof(struct

12、student);printf("學號t姓名n");scanf("%d%s”,&p1->num2,p1->name2);p1->nelen=0;for(i=0;i<20;i+)p1->nelenumi=0;head2=NULL;while(p1->num2!=0)(N2=N2+1;if(N2=1)head2=p1;elsep2->next=p1;p2=p1;p1=(structstudent*)malloc(sizeof(structstudent);scanf("%d%s”,&p1->nu

13、m2,p1->name2);p1->nelen=0;for(i=0;i<20;i+)p1->nelenumi=0;p2->next=NULL;voidputin2()/從文件錄入學生信息(inti=0;FILE*fp;charfilepath20;structstudent*p1,*p2;N2=0;printf(-請輸入您要讀取的路徑：，getchar();gets(filepath);if(fp=fopen(filepath,"rt")=NULL)printf("找不到%s文件!n",filepath);exit(0);p

14、1=p2=(structstudent*)malloc(sizeof(structstudent);fread(p1,sizeof(structstudent),1,fp);head2=NULL;while(!feof(fp)i=0;N2=N2+1;if(N2=1)head2=p1;elsep2->next=p1;p2=p1;p1=(structstudent*)malloc(sizeof(structstudent);fread(p1,sizeof(structstudent),1,fp);p2->next=NULL;voidinput()/錄入學生信息函數(shù)inti;printf

15、("ttt錄入學生信息n");printf("n1.從鍵盤錄入n");printf("2.從文件錄入n");printf("3.返回主菜單n");printf("請輸入1-3:n");scanf(”d”,&i);switch(i)case1:putin();break;case2:putin2();break;case3:break;voidinserts(structstudent*incouse)/增加學生信息structstudent*p0,*p1,*p2;p1=head2;p0=

16、incouse;if(head2=NULL)head2=p0;p0->next=NULL;elsewhile(p0->num2>p1->num2)&&(p1->next!=NULL)p2=p1;p1=p1->next;if(p0->num2<=p1->num2)if(head2=p1)head2=p0;elsep2->next=p0;p0->next=p1;else(p1->next=p0;p0->next=NULL;N2=N2+1;voiddels(intnum2)/刪除學生信息(structstu

17、dent*p1,*p2;if(head2=NULL)(printf("n無法刪除n");gotoend;p1=head2;while(num2!=p1->num2&&p1->next!=NULL)(p2=p1;p1=p1->next;if(num2=p1->num2)(if(p1=head2)head2=p1->next;elsep2->next=p1->next;printf("已刪除n");N2=N2-1;elseprintf(-沒有此學生編號n");end:;voidmanagem

18、ents。/學生信息管理函數(shù)structstudent*p1;inti,num2;printf("ttt學生信息管理n");printf("1.添加學生信息n");printf("2.刪除學生信息n");printf("3.返回主菜單n");printf("請選擇1-3:n");scanf("%d",&i);switch(i)case1:p1=(structstudent*)malloc(sizeof(structstudent);p1->nelen=0;p1-

19、>nelenum0=0;printf("numtnamen");scanf("%d%s",&p1->num2,p1->name2);inserts(p1);break;case2:printf(-請輸入您要刪除的學生編號:n");scanf("%d",&num2);dels(num2);break;case3:break;voidelect()/學生選課(structstudent*s;structcourse*p;inta,i,b;printf("請輸入您的學號:n")

20、;scanf("%d",&a);s=head2;while(s->num2)!=a&&s->next!=NULL)s=s->next;if(s->num2!=a)(printf(-您的信息不存在，請重新輸入:n");gotoend;if(s->nelen)>10)(printf("您的學分已滿");gotoend;printf("請輸入您要選修的課程編號n");scanf("%d",&b);for(i=0;(s->nelenumi)

21、=0;i+);s->nelenumi=b;p=head1;while(p->num1)!=b)p=p->next;for(i=0;(s->nelenumi)!=0;i+);s->nelenumi=b;(p->people)+;(s->nelen)=(s->nelen)+(p->credit);(p->people)+;end:;voidback()/學生退課(structstudent*p;structcourse*p1;intb,i,j,a;printf("請輸入您的學號:n");scanf("%d&q

22、uot;,&a);p=head2;while(p->num2!=a&&p!=NULL)p=p->next;if(p=NULL)printf(-您的信息不存在:n");else(printf("請輸入您要退選的課程:n");scanf("%d",&b);p1=head1;while(p1->num1!=b)p1=p1->next;for(i=0;p->nelenumi!=b;i+);for(j=i;p->nelenumj!=0;j+)p->nelenumj=p->ne

23、lenumj+1;p->nelenum-j=0;(p->nelen)=(p->nelen)-(p1->credit);(p1->people)-;printf("succeed!n");voidelective()/學生選課信息管理inti;printf("ttt學生選課信息管理n");printf("1.選課n");printf("2.退課n");printf("3.返回主菜單n");printf("請輸入1-3:n");scanf(”d”,&

24、amp;i);switch(i)(case1:elect();break;case2:back();break;case3:break;voidlistc()/瀏覽課程信息(structcourse*p;p=head1;printf(-課程編號課程名稱主修課程性質學分課時教師選課人數(shù)n");while(p!=NULL)(printf("%6d%13s%13s%10s%7d%7d%12s%5dn",p->num1,p->name1,p->major,p->type,p->credit,p->period,p->teacher

25、,p->people);p=p->next;voidlists()/瀏覽學生信息(structstudent*p;inta;p=head2;printf(-學生編號學生姓名所選課程編號所選課程學分n");while(p!=NULL)(printf("%6d%13s",p->num2,p->name2);printf("%6d",p->nelen);for(a=0;p->nelenuma!=0&&a<14;a+)printf("%d",p->nelenuma);p

26、rintf("n");p=p->next;voidintoc()/存儲課程信息(FILE*fp;structcourse*p;charfilepath30;printf(-輸入路徑:");getchar();gets(filepath);if(fp=fopen(filepath,"w")=NULL)(無法儲存!");exit(0);p=head1;while(p!=NULL)fprintf(fp,"%d%s%s%s%d%d%s%dn",p->num1,p->name1,p->major,p-

27、>type,p->credit,p->period,p->teacher,p->people);p=p->next;fclose(fp);printf("已儲存入s文件!n",filepath);voidintos()/存儲學生信息(FILE*fp;structstudent*p;charfilepath30;printf(-請輸入路徑:");getchar();gets(filepath);if(fp=fopen(filepath,"wt")=NULL)(printf("n無法儲存!")

28、；exit(0);p=head2;while(p!=NULL)(fwrite(p,sizeof(structstudent),1,fp);p=p->next;fclose(fp);printf("已儲存入%s文件!n",filepath);voidinto()/(信息存儲函數(shù)inti;printf("ttt信息存儲n");printf("1.課程信息存儲n");printf("2.學生信息存儲tn");printf("3.返回主菜單n");printf("請輸入1-3n"

29、;);scanf("%d",&i);switch(i)case(1):intoc();break;case(2):intos();break;case(3):break;信息存儲瀏覽函數(shù)voidstore()/(inti;printf(-tt信息存儲和瀏覽n");printf("1.課程信息瀏覽n");printf("2.學生信息瀏覽n");printf("3.信息存儲n");printf("4.返回主菜單n");printf("請輸入1-4:n");sca

30、nf("%d",&i);switch(i)(case(1):listc();break;case(2):lists();break;case(3):into();break;case(4):break;voidsearch1()/按學生編號查找學生信息(inta,b;structstudent*p;printf(-請輸入學生編號");scanf("%d",&a);p=head2;printf(-學號學生姓名所選課程編號所選課程學分n");while(p!=NULL)(if(p->num2=a)(printf(&q

31、uot;%6d%13s",p->num2,p->name2);for(b=0;p->nelenumb!=0&&b<14;b+)printf("%d",p->nelenumb);printf("%10dn",p->nelen);p=p->next;voidsearch2()/按學生姓名查找學生信息(intb;charname20;structstudent*p;printf(-請輸入要查找的學生姓名:");scanf("%s",name);p=head2;pr

32、intf(-學號學生姓名所選課程編號所選課程學分n");while(p!=NULL)(if(strcmp(name,p->name2)=0)(printf("%6d%13s",p->num2,p->name2);for(b=0;p->nelenumb!=0&&b<14;b+)printf("%d",p->nelenumb);printf("%10dn",p->nelen);p=p->next;voidsearch()/學生信息查找主函數(shù)(inti;printf(-ttt學生信息查找");printf("n1.按學號查找");printf("n2.按姓名查找");printf("n3.返回主菜單");printf("n請輸入1-3:");scanf("%d",&i);switch(i)(case1:search1();break;case2:search2();break;case3:break;voidmain()/主函數(shù)