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- 2022-08-23 发布
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#include#includeintN1,N2,kk1,kk2,kk3;structcouse*head1;structstudent*head2;structcouse//课程信息结构体{intnum1;charname1[20];intscore;intnelepeo;//课程已选人数intMelepeo;//课程人数上限structcouse*next;};structstudent//学生信息结构体{intnum2;charname2[20];intnelenum[50];//已选课程编号intnelen;//已选课程数量structstudent*next;};voidMs(){for(kk1=0;kk1<1100;kk1++)for(kk2=0;kk2<1200;kk2++)for(kk3=0;kk3<1200;kk3++);}voidkeyboardc()//录入课程子函数(从键盘录入){structcouse*p1,*p2;N1=0;p1=p2=(structcouse*)malloc(sizeof(structcouse));printf("课程编号\t课程名称\t学分\t课程人数上限\n");scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);p1->nelepeo=0;head1=NULL;while(p1->num1!=0){N1=N1+1;if(N1==1)head1=p1;elsep2->next=p1;\np2=p1;p1=(structcouse*)malloc(sizeof(structcouse));scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);p1->nelepeo=0;}p2->next=NULL;}voidfilec()//录入键盘子函数(从文件录入){FILE*fp;charfilepath[20];structcouse*p1,*p2;N1=0;printf("输入要读入的文件路径:");getchar();gets(filepath);if((fp=fopen(filepath,"r"))==NULL){printf("找不到%s文件!\n",filepath);exit(0);}p1=p2=(structcouse*)malloc(sizeof(structcouse));fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);head1=NULL;while(!feof(fp)){N1=N1+1;if(N1==1)head1=p1;elsep2->next=p1;p2=p1;p1=(structcouse*)malloc(sizeof(structcouse));fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);}p2->next=NULL;}voidinputc()//录入课程主函数{\ninti;printf("\t\t\t录入课程信息\n");printf("\n1.从键盘录入\n");printf("2.从文件录入\n");printf("3.返回主菜单\n");printf("请选择(1~3):\n");scanf("%d",&i);switch(i){case(1):keyboardc();break;case(2):filec();break;case(3):break;}}voidinsertc(structcouse*incouse)//课程管理子函数(增加课程){structcouse*p0,*p1,*p2;p1=head1;p0=incouse;if(head1==NULL){head1=p0;p0->next=NULL;}else{while((p0->num1>p1->num1)&&(p1->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;}\n}N1=N1+1;}voiddelc(intnum1)//课程管理子函数(删除课程){structcouse*p1,*p2;if(head1==NULL){printf("\n没有课程,无法删除!\n");gotoend;}p1=head1;while(num1!=p1->num1&&p1->next!=NULL){p2=p1;p1=p1->next;}if(num1==p1->num1){if(p1==head1)head1=p1->next;elsep2->next=p1->next;printf("已删除该编号课程!\n");N1=N1-1;}elseprintf("无该编号的课程!\n");end:;}voidmanagementc()//课程管理主函数{structcouse*incouse;inti,num1;printf("\t\t\t课程管理\n");printf("1.新增课程\n");printf("2.删除课程\n");printf("3.返回主菜单\n");printf("请选择(1~3):\n");scanf("%d",&i);switch(i){case(1):{incouse=(structcouse*)malloc(sizeof(structcouse));\nprintf("课程编号\t课程名称\t学分\t课程人数上限\n");scanf("%d%s%d%d",&incouse->num1,incouse->name1,&incouse->score,&incouse->Melepeo);incouse->nelepeo=0;insertc(incouse);break;}case(2):{printf("请输入要删除课程的编号:\n");scanf("%d",&num1);delc(num1);break;}case(3):break;}}voidkeyboards()//录入学生信息子函数（从键盘录入）{inti;structstudent*p1,*p2;N2=0;p1=p2=(structstudent*)malloc(sizeof(structstudent));printf("学生学号\t学生姓名\n");scanf("%d%s",&p1->num2,p1->name2);p1->nelen=0;for(i=0;i<20;i++)p1->nelenum[i]=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->num2,p1->name2);p1->nelen=0;for(i=0;i<20;i++)p1->nelenum[i]=0;}p2->next=NULL;}\nvoidfiles()//录入学生信息子函数（从文件录入）{inti=0;FILE*fp;charfilepath[20];structstudent*p1,*p2;N2=0;printf("输入要读入的文件路径:");getchar();gets(filepath);if((fp=fopen(filepath,"r"))==NULL){printf("找不到%s文件!\n",filepath);exit(0);}p1=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;}voidinputs()//录入学生信息主函数{inti;printf("\t\t\t录入学生信息\n");printf("\n1.从键盘录入\n");printf("2.从文件录入\n");printf("3.返回主菜单\n");printf("请选择(1~3):\n");scanf("%d",&i);switch(i){case(1):keyboards();break;\ncase(2):files();break;case(3):break;}}voidinserts(structstudent*incouse)//学生信息管理子函数(填加学生信息){structstudent*p0,*p1,*p2;p1=head2;p0=incouse;if(head2==NULL){head2=p0;p0->next=NULL;}else{while((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)//学生信息管理子函数（删除学生信息){structstudent*p1,*p2;if(head2==NULL){printf("\n没有该学生信息,无法删除!\n");gotoend;\n}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("已删除该学生信息!\n");N2=N2-1;}elseprintf("无该学号的学生!\n");end:;}voidmanagements()//学生信息管理主函数{structstudent*incouse;inti,num2;printf("\t\t\t学生信息管理\n");printf("1.新增学生信息\n");printf("2.删除学生信息\n");printf("3.返回主菜单\n");printf("请选择(1~3):\n");scanf("%d",&i);switch(i){case(1):{incouse=(structstudent*)malloc(sizeof(structstudent));incouse->nelen=0;incouse->nelenum[0]=0;printf("学生学号\t学生姓名\n");scanf("%d%s",&incouse->num2,incouse->name2);inserts(incouse);break;}case(2):{printf("请输入要删除学生的学号:\n");\nscanf("%d",&num2);dels(num2);break;}case(3):break;}}voidelect(structstudent*s)//选课{structcouse*p;intnum1,i;printf("请输入要选课的编号:\n");scanf("%d",&num1);for(i=0;s->nelenum[i]!=0;i++);s->nelenum[i]=num1;(s->nelen)++;p=head1;while(p->num1!=num1)p=p->next;(p->nelepeo)++;}voidcheak()//学生选课子函数(查询可选课程){chare;structcouse*c;structstudent*s;intnum2,i,j=0,t=0;printf("请输入你的学号:");scanf("%d",&num2);s=head2;while(s->num2!=num2&&s->next!=NULL)s=s->next;if(s->num2!=num2){printf("不存在你的信息,请进入主菜单录入你的信息!\n");gotoend;}c=head1;printf("你的可选课程编号:\n");while(c!=NULL){for(t=0,i=0;s->nelenum[i]!=0;i++){if(c->num1==s->nelenum[i])t=1;\n}if(t==0&&(c->nelepeo!=c->Melepeo)){printf("%d\n",c->num1);j++;}c=c->next;}if(j==0){printf("你已选完所有课程，无法再多选!\n");gotoend;}printf("选课(y/n)?:\n");getchar();e=getchar();i=0;while(e=='y'){elect(s);printf("继续选课(y/n)?:\n");getchar();e=getchar();}end:;}voidback(structstudent*p)//退课{structcouse*p1;intnum1,i,j;printf("请输入你要退掉的课程编号:\n");scanf("%d",&num1);p1=head1;while(p1->num1!=num1)p1=p1->next;for(i=0;p->nelenum[i]!=num1;i++);for(j=i;p->nelenum[j]!=0;j++)p->nelenum[j]=p->nelenum[j+1];p->nelenum[--j]=0;(p1->nelepeo)--;printf("退课成功!\n");}voidhcheak()//学生选课子函数（查询已选课程){\ncharc;structcouse*p0;structstudent*p;intnum2,i,f=0;printf("请输入学号:\n");scanf("%d",&num2);p=head2;while(p->num2!=num2&&p!=NULL)p=p->next;if(p==NULL){printf("不存在你的信息,请回主菜单录入信息:\n");gotoend;}printf("已选课程编号:\n");if(p->nelenum[0]==0){printf("你还没选课!\n");gotoend;}for(i=0;p->nelenum[i]!=0;i++){printf("%d\n",p->nelenum[i]);p0=head1;while(p0->num1!=p->nelenum[i])p0=p0->next;f=f+p0->score;}printf("总学分:%d\n",f);printf("是否进行退课(y/n)?");getchar();c=getchar();while(c=='y'){back(p);printf("继续退课(y/n)?");getchar();c=getchar();(p->nelen)--;}end:;}voidelective()//学生选课主函数{\ninti;printf("\t\t\t学生选课\n");printf("1.查询可选课程\n");printf("2.查询已选课程\n");printf("3.返回主菜单\n");printf("请输入(1~3):\n");scanf("%d",&i);switch(i){case(1):cheak();break;case(2):hcheak();break;case(3):break;}}voidlistc()//输出课程信息{structcouse*p;p=head1;printf("课程编号课程名称学分课程已选人数课程人数上限\n");while(p!=NULL){printf("%-8d%10s%6d%8d%12d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);p=p->next;}}voidlists()//输出学生信息{structstudent*p;p=head2;printf("学生学号学生姓名已选课程数量\n");while(p!=NULL){printf("%-4d%10s%6d\n",p->num2,p->name2,p->nelen);p=p->next;}}voidintoc()//存储课程信息{FILE*fp;structcouse*p;\ncharfilepath[30];printf("输入课程信息要保存的文件路径:");getchar();gets(filepath);if((fp=fopen(filepath,"w"))==NULL){printf("\n保存失败!");exit(0);}p=head1;while(p!=NULL){fprintf(fp,"%d%s%d%d%d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);p=p->next;}fclose(fp);printf("课程信息已保存在%s中!\n",filepath);}voidintos()//存储学生信息{FILE*fp;structstudent*p;charfilepath[30];printf("输入学生信息要保存的文件路径:");getchar();gets(filepath);if((fp=fopen(filepath,"w"))==NULL){printf("\n保存失败!");exit(0);}p=head2;while(p!=NULL){fwrite(p,sizeof(structstudent),1,fp);p=p->next;}fclose(fp);printf("学生信息已保存在%s中!\n",filepath);}voidinto()//存储信息\n{inti;printf("1.存储课程信息\n");printf("2.存储学生信息\n");printf("3.返回主菜单\n");printf("请输入(1~3)\n");scanf("%d",&i);switch(i){case(1):intoc();break;case(2):intos();break;case(3):break;}}voidstore()//信息主函数{inti;printf("\t\t系统信息查看及存储\n");printf("1.查看课程信息\n");printf("2.查看学生信息\n");printf("3.存储信息\n");printf("4.返回主菜单\n");printf("请输入(1~4):\n");scanf("%d",&i);switch(i){case(1):listc();break;case(2):lists();break;case(3):into();break;case(4):break;}}intmain()//主函数{inti;start:printf("\n\t\t\t欢迎使用学生选课系统!\n");printf("菜单:\n");printf("1.录入课程信息\n");printf("2.课程管理\n");printf("3.录入学生信息\n");printf("4.学生信息管理\n");\nprintf("5.学生选课\n");printf("6.系统信息查看及存储\n");printf("7.退出系统\n");printf("\n请输入菜单选项(1~7):\n");scanf("%d",&i);if(i<1||i>7){printf("输入错误,请重输:\n");gotostart;}switch(i){case(1):{system("cls");inputc();gotostart;break;}case(2):{system("cls");managementc();gotostart;break;}case(3):{system("cls");inputs();gotostart;break;}case(4):{system("cls");managements();gotostart;break;}case(5):{\nsystem("cls");elective();gotostart;break;}case(6):{system("cls");store();gotostart;break;}case(7):{system("cls");printf("感谢使用本系统!\n\n再见!\n");}}return(0);}
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