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1楼 #include "stdio.h" #include "stdlib.h" #include "string.h" int shoudsave=0; // struct student { char num[10];//学号 char name[20]; char sex[4]; int cgrade; int mgrade; int egrade; int totle; int ave; char neartime[10];//最近更新时间 }; typedef struct node { struct student data; struct node *next; }Node,*Link; void menu() { printf("********************************************************************************"); printf("\t1输入学生资料\t\t\t\t\t2删除学生资料\n"); printf("\t3查询学生资料\t\t\t\t\t4修改学生资料\n"); printf("\t5显示学生资料\t\t\t\t\t6统计学生成绩\n"); printf("\t7排序学生成绩\t\t\t\t\t8保存学生资料\n"); printf("\t9获取帮助信息\t\t\t\t\t0退出系统\n"); printf("********************************************************************************\n"); } void printstart() { printf("-----------------------------------------------------------------------\n"); } void Wrong() { printf("\n=====>提示:输入错误!\n"); } void Nofind() { printf("\n=====>提示:没有找到该学生!\n"); } void printc() // 本函数用于输出中文 { printf(" 学号\t 姓名 性别 英语成绩 数学成绩 C语言成绩 总分 平均分\n"); } void printe(Node *p)//本函数用于输出英文 { printf("%-12s%s\t%s\t%d\t%d\t%d\t %d\t %d\n",p->data.num,p->data.name,p->data.sex,p->data.egrade,p->data.mgrade,p->data.cgrade,p->data.totle,p->data.ave); } Node* Locate(Link l,char findmess[],char nameornum[]) //该函数用于定位连表中符合要求的接点,并返回该指针 { Node *r; if(strcmp(nameornum,"num")==0) //按学号查询 { r=l->next; while(r!=NULL) { if(strcmp(r->data.num,findmess)==0) return r; r=r->next; } } else if(strcmp(nameornum,"name")==0) //按姓名查询 { r=l->next; while(r!=NULL) { if(strcmp(r->data.name,findmess)==0) return r; r=r->next; } } return 0; } void Add(Link l) //增加学生 { Node *p,*r,*s; char num[10]; r=l; s=l->next; while(r->next!=NULL) r=r->next; //将指针置于最末尾 while(1) { printf("请你输入学号(以'0'返回上一级菜单:)"); scanf("%s",num); if(strcmp(num,"0")==0) break; while(s) { if(strcmp(s->data.num,num)==0) { printf("=====>提示:学号为'%s'的学生已经存在,若要修改请你选择'4 修改'!\n",num); printstart(); printc(); printe(s); printstart(); printf("\n"); return; } s=s->next; } p=(Node *)malloc(sizeof(Node)); strcpy(p->data.num,num); printf("请你输入姓名:"); scanf("%s",p->data.name); getchar(); printf("请你输入性别:"); scanf("%s",p->data.sex); getchar(); printf("请你输入c语言成绩:"); scanf("%d",&p->data.cgrade); getchar(); printf("请你输入数学成绩:"); scanf("%d",&p->data.mgrade); getchar(); printf("请你输入英语成绩:"); scanf("%d",&p->data.egrade); getchar(); p->data.totle=p->data.egrade+p->data.cgrade+p->data.mgrade; p->data.ave=p->data.totle / 3; //信息输入已经完成 p->next=NULL; r->next=p; r=p; shoudsave=1; } } void Qur(Link l) //查询学生 { int sel; char findmess[20]; Node *p; if(!l->next) { printf("\n=====>提示:没有资料可以查询!\n"); return; |
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2楼 } printf("\n=====>1按学号查找\n=====>2按姓名查找\n"); scanf("%d",&sel); if(sel==1)//学号 { printf("请你输入要查找的学号:"); scanf("%s",findmess); p=Locate(l,findmess,"num"); if(p) { printf("\t\t\t\t查找结果\n"); printstart(); printc(); printe(p); printstart(); } else Nofind(); } else if(sel==2) //姓名 { printf("请你输入要查找的姓名:"); scanf("%s",findmess); p=Locate(l,findmess,"name"); if(p) { printf("\t\t\t\t查找结果\n"); printstart(); printc(); printe(p); printstart(); } else Nofind(); } else Wrong(); } void Del(Link l) //删除 { int sel; Node *p,*r; char findmess[20]; if(!l->next) { printf("\n=====>提示:没有资料可以删除!\n"); return; } printf("\n=====>1按学号删除\n=====>2按姓名删除\n"); scanf("%d",&sel); if(sel==1) { printf("请你输入要删除的学号:"); scanf("%s",findmess); p=Locate(l,findmess,"num"); if(p) { r=l; while(r->next!=p) r=r->next; r->next=p->next; free(p); printf("\n=====>提示:该学生已经成功删除!\n"); shoudsave=1; } else Nofind(); } else if(sel==2) { printf("请你输入要删除的姓名:"); scanf("%s",findmess); p=Locate(l,findmess,"name"); if(p) { r=l; while(r->next!=p) r=r->next; r->next=p->next; free(p); printf("\n=====>提示:该学生已经成功删除!\n"); shoudsave=1; } else Nofind(); } else Wrong(); } void Modify(Link l) { Node *p; char findmess[20]; if(!l->next) { printf("\n=====>提示:没有资料可以修改!\n"); return; } printf("请你输入要修改的学生学号:"); scanf("%s",findmess); p=Locate(l,findmess,"num"); if(p) { printf("请你输入新学号(原来是%s):",p->data.num); scanf("%s",p->data.num); printf("请你输入新姓名(原来是%s):",p->data.name); scanf("%s",p->data.name); getchar(); printf("请你输入新性别(原来是%s):",p->data.sex); scanf("%s",p->data.sex); printf("请你输入新的c语言成绩(原来是%d分):",p->data.cgrade); scanf("%d",&p->data.cgrade); getchar(); printf("请你输入新的数学成绩(原来是%d分):",p->data.mgrade); scanf("%d",&p->data.mgrade); getchar(); printf("请你输入新的英语成绩(原来是%d分):",p->data.egrade); scanf("%d",&p->data.egrade); p->data.totle=p->data.egrade+p->data.cgrade+p->data.mgrade; p->data.ave=p->data.totle/3; printf("\n=====>提示:资料修改成功!\n"); shoudsave=1; } else Nofind(); } void Disp(Link l) { int count=0; Node *p; p=l->next; if(!p) { printf("\n=====>提示:没有资料可以显示!\n"); return; } printf("\t\t\t\t显示结果\n"); printstart(); printc(); printf("\n"); while(p) { printe(p); p=p->next; } printstart(); printf("\n"); } void Tongji(Link l) { Node *pm,*pe,*pc,*pt,*pa; //用于指向分数最高的接点 Node *r=l->next; if(!r) { printf("\n=====>提示:没有资料可以统计!\n"); return ; } pm=pe=pc=pt=pa=r; while(r!=NULL) { if(r->data.cgrade>=pc->data.cgrade) pc=r; if(r->data.mgrade>=pm->data.mgrade) pm=r; if(r->data.egrade>=pe->data.egrade) pe=r; if(r->data.totle>=pt->data.totle) pt=r; if(r->data.ave>=pa->data.ave) pa=r; |
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3楼 r=r->next; } printf("------------------------------统计结果--------------------------------\n"); printf("总分最高者:\t%s %d分\n",pt->data.name,pt->data.totle); printf("平均分最高者:\t%s %d分\n",pa->data.name,pa->data.ave); printf("英语最高者:\t%s %d分\n",pe->data.name,pe->data.egrade); printf("数学最高者:\t%s %d分\n",pm->data.name,pm->data.mgrade); printf("c语言最高者:\t%s %d分\n",pc->data.name,pc->data.cgrade); printstart(); } void Sort(Link l) { Link ll; Node *p,*rr,*s; ll=(Link)malloc(sizeof(Node)); //用于做新的连表 ll->next=NULL; if(l->next==NULL) { printf("\n=====>提示:没有资料可以排序!\n"); return ; } p=l->next; while(p) { s=(Node*)malloc(sizeof(Node)); //新建接点用于保存信息 s->data=p->data; s->next=NULL; rr=ll; while(rr->next!=NULL && rr->next->data.totle>=p->data.totle) rr=rr->next; if(rr->next==NULL) rr->next=s; else { s->next=rr->next; rr->next=s; } p=p->next; } free(l); l->next=ll->next; printf("\n=====>提示:排序已经完成!\n"); } void Save(Link l) { FILE* fp; Node *p; int flag=1,count=0; fp=fopen("c:\\student","wb"); if(fp==NULL) { printf("\n=====>提示:重新打开文件时发生错误!\n"); exit(1); } p=l->next; while(p) { if(fwrite(p,sizeof(Node),1,fp)==1) { p=p->next; count++; } else { flag=0; break; } } if(flag) { printf("\n=====>提示:文件保存成功.(有%d条记录已经保存.)\n",count); shoudsave=0; } fclose(fp); } void main() { Link l;//连表 FILE *fp; //文件指针 int sel; char ch; char jian; int count=0; Node *p,*r; printf("\t\t\t\t学生成绩管理系统\n\t\t\t\t-------01软件学院 吴海松(200155304)\n"); l=(Node*)malloc(sizeof(Node)); l->next=NULL; r=l; fp=fopen("C:\\student","rb"); if(fp==NULL) { printf("\n=====>提示:文件还不存在,是否创建?(y/n)\n"); scanf("%c",&jian); if(jian=='y'||jian=='Y') fp=fopen("C:\\student","wb"); else exit(0); } printf("\n=====>提示:文件已经打开,正在导入记录......\n"); while(!feof(fp)) { p=(Node*)malloc(sizeof(Node)); if(fread(p,sizeof(Node),1,fp)) //将文件的内容放入接点中 { p->next=NULL; r->next=p; r=p; //将该接点挂入连中 count++; } } fclose(fp); //关闭文件 printf("\n=====>提示:记录导入完毕,共导入%d条记录.\n",count); while(1) { menu(); printf("请你选择操作:"); scanf("%d",&sel); if(sel==0) { if(shoudsave==1) { getchar(); printf("\n=====>提示:资料已经改动,是否将改动保存到文件中(y/n)?\n"); scanf("%c",&ch); if(ch=='y'||ch=='Y') Save(l); } printf("\n=====>提示:你已经退出系统,再见!\n"); break; } switch(sel) { case 1:Add(l);break; //增加学生 case 2:Del(l);break;//删除学生 case 3:Qur(l);break;//查询学生 case 4:Modify(l);break;//修改学生 case 5:Disp(l);break;//显示学生 case 6:Tongji(l);break;//统计学生 case 7:Sort(l);break;//排序学生 case 8:Save(l);break;//保存学生 case 9:printf("\t\t\t==========帮助信息==========\n");break; default: Wrong();getchar();break; } } } // |
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| 219.145.93.* |
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| 222.90.71.* |
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| 218.204.87.* |
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| 222.138.207.* |
10楼 一个教师??????不可能啊,那为什么学生成绩程序这么多呢 |
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| 202.204.104.* |
11楼 --------------------Configuration: fgfg - Win32 Debug-------------------- Compiling... fgfg.cpp d:\tc30\bin\my_c\fgfg.cpp(9) : error C2065: 'gotoxy' : undeclared identifier d:\tc30\bin\my_c\fgfg.cpp(10) : error C2065: 'textcolor' : undeclared identifier d:\tc30\bin\my_c\fgfg.cpp(10) : error C2065: 'RED' : undeclared identifier d:\tc30\bin\my_c\fgfg.cpp(13) : warning C4508: 'inputx' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(20) : warning C4508: 'input' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(71) : warning C4508: 'print1' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(89) : warning C4508: 'print2' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(110) : error C2065: 'go' : undeclared identifier d:\tc30\bin\my_c\fgfg.cpp(111) : warning C4508: 'change' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(113) : error C2373: 'go' : redefinition; different type modifiers d:\tc30\bin\my_c\fgfg.cpp(119) : error C2065: 'find' : undeclared identifier d:\tc30\bin\my_c\fgfg.cpp(121) : error C2065: 'main' : undeclared identifier d:\tc30\bin\my_c\fgfg.cpp(123) : error C2065: 'clrscr' : undeclared identifier d:\tc30\bin\my_c\fgfg.cpp(130) : warning C4508: 'go' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(144) : warning C4508: 'find1' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(159) : warning C4508: 'find2' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(170) : warning C4508: 'find3_1' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(179) : warning C4508: 'find3' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(181) : error C2373: 'find' : redefinition; different type modifiers d:\tc30\bin\my_c\fgfg.cpp(192) : warning C4508: 'find' : function should return a value; 'void' return type assumed d:\tc30\bin\my_c\fgfg.cpp(194) : error C2373: 'main' : redefinition; different type modifiers d:\tc30\bin\my_c\fgfg.cpp(197) : error C2065: 'YELLOW' : undeclared identifier d:\tc30\bin\my_c\fgfg.cpp(253) : warning C4508: 'main' : function should return a value; 'void' return type assumed Error executing cl.exe. fgfg.obj - 11 error(s), 12 warning(s) |
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| 202.204.104.* |
12楼 -------------------Configuration: fgfg - Win32 Debug-------------------- Compiling... Skipping... (no relevant changes detected) hjkk.cpp hjkk.obj - 0 error(s), 0 warning(s) |
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| 220.180.132.* |
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| 222.222.127.* |
14楼 |
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| 220.170.240.* |
15楼 这么长`~》?强~ 可是我没看见主函数啊!~? 是不是错了~~ |
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| 221.235.60.* |
16楼 #define R 62 /*定义人数*/ #define M 8 /*定义功课数*/ main() {int i,j; int a[R][M]; int temp=0; int sum_person[R],sum_score[R],top_m[R]; double ave_person[R],ave_score[R];; /*利用scanf函数对数组进行赋值*/ printf("Please Input Array...\n\n"); printf("For Example:90 80 70 85 95 69 84 85 Enter\n\n"); printf("English|Computer|Maths|Circuit|Physics|Gymnasium|Law|linearis|\n\n"); for(i=0;i<R;i++) for(j=0;j<M;j++) scanf("%d",&a[i][j]); /*利用一个双重循环输出表*/ printf("===============================================================\n"); printf("English|Computer|Maths|Circuit|Physics|Gymnasium|Law|linearis|-\n"); printf("---------------------------------------------------------------\n"); for(i=0;i<R;i++) { for(j=0;j<M;j++) printf("N%d=[%d]\40",i,a[i][j]); printf("\n"); } getch(); /*得到每个学生成绩的总分及平均分*/ printf("===============================================================\n"); printf("Sum\40And\40Average\40With\40Everyone...\n"); printf("---------------------------------------------------------------\n"); for(i=0;i<R;i++) { sum_person[i]=0; for(j=0;j<M;j++) sum_person[i]+=a[i][j]; printf("sum_person[%d]=%2d\t",i,sum_person[i]); ave_person[i]=(sum_person[i]*1.0)/M; printf("ave_person[%d]=%f\n",i,ave_person[i]); } getch(); /*利用选择法对学生的成绩进行排序*/ printf("===============================================================\n"); printf("Rank\40Of\40The\40Achievement...\n"); printf("---------------------------------------------------------------\n"); for(i=0;i<R-1;i++) { for(j=i+1;j<R;j++) if(sum_person[i]<sum_person[j]) { temp=sum_person[i]; sum_person[i]=sum_person[j]; sum_person[j]=temp; } } for(i=0;i<R;i++) printf("Top[%d]=%d\40\40",i,sum_person[i]); getch(); /*一个双重循环得到每门功课的平均值*/ printf("\n===============================================================\n"); printf("Average\40Of\40Each\40Subject...\n"); printf("---------------------------------------------------------------\n"); for(j=0;j<M;j++) { sum_score[j]=0; for(i=0;i<R;i++) sum_score[j]+=a[i][j]; printf("sum_score[%d]=%d\t",j,sum_score[j]); ave_score[j]=(sum_score[j]*1.0)/M; printf("ave_score[%d]=%f\n",j,ave_score[j]); } /*将每门功课的分数从大到小排列*/ printf("---------------------------------------------------------------\n"); for(i=0;i<R-1;i++) { for(j=i+1;j<R;j++) if(sum_score[i]<sum_score[j]) { temp=sum_score[i]; sum_score[i]=sum_score[j]; sum_score[j]=temp; } } for(i=0;i<R;i++) printf("Top[%d]=%d\n",i,sum_score[i]); getch(); /*得到每门功课的最高分*/ printf("===============================================================\n"); printf("Max\40Of\40Each\40Subject...\n"); printf("---------------------------------------------------------------\n"); for(j=0;j<M;j++) { top_m[j]=a[0][j]; for(i=0;i<R;i++) if(top_m[j]<a[i][j]) { top_m[j]=a[i][j]; } } for(j=0;j<M;j++) printf("Top[%d]=%d\n",j,top_m[j]); printf("\n===============================================================\n"); getch(); } |
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| 221.235.60.* |
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| 218.94.131.* |
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| 219.157.68.* |
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| 61.236.219.* |
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| 210.26.176.* |
21楼 骗人撒~!浪费感情 |
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| 210.26.176.* |
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| 218.28.87.* |
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| 218.66.159.* |
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| 219.147.57.* |
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| 222.133.133.* |
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| 218.25.162.* |
30楼 /* Author:jiguang_duan */ /* Date:04-04-06 */ #include <stdio.h> #include <conio.h> #define N1 2 #define N2 3 float Stu_Score[N1][N2]; float S_Ave[N1]; float C_Ave[N2]; int A[N2]; /*--------------------function declaration-----------------*/ void print_menu(); void input_score(); /*input students' scores*/ void print_s_ave(); /*print students' average score */ void stu_ave(); /* count students' average score */ void course_ave(); /* count courses' average score */ void print_c_ave(); /* print courses' average score */ void find_max_course(); /* search the max score */ void fangcha(); /*count the fangcha */ /*------------------------main()---------------------------*/ int main() { char ch; for(;;){ do{ print_menu(); ch=toupper(getch()); }while (ch!='I' && ch!='S' && ch!='C' && ch!='Q'); switch(ch){ case 'I':input_score(); break; case 'S':stu_ave(); print_s_ave(); break; case 'C':course_ave(); print_c_ave(); break; case 'Q':clrscr(); exit(0); }/* end of switch */ } /* end of for statement */ } /*------------------------input_score()---------------------*/ void input_score(void) { int i,j; clrscr(); for(i=0;i<N1;i++){ printf("No.%d",i+1); for(j=0;j<N2;j++) scanf("%f",&Stu_Score[i][j]); } } /*-------------------------stu_ave()--------------------------*/ void stu_ave(void) { int i,j; for (i=0;i<N1;i++ ) S_Ave[i]=0; for(i=0;i<N1;i++){ for(j=0;j<N2;j++) S_Ave[i]+=Stu_Score[i][j]; S_Ave[i]/=N2; } } void print_s_ave(void) { int i; clrscr(); printf("\t\tthe average score table of all students\n"); printf("\t\tNo.\t\tave_score\n"); for(i=0;i<N1;i++) printf("\t\tNo.%d\t\t%6.2f\n",i,S_Ave[i]); printf("Press any key to return to main menu....\n"); getch(); } /*--------------------------course_ave()-----------------------*/ void course_ave(void) { int i,j; for (i=0;i<N2;i++ ) C_Ave[i]=0; for(i=0;i<N2;i++){ for(j=0;j<N1;j++) C_Ave[i]+=Stu_Score[j][i]; C_Ave[i]/=N1; } } void print_c_ave(void) { int i; char *name[]={"math","chinese","english","physics","chemistry"}; clrscr(); printf("\t\tthe average score table of all courses\n"); printf("\t\tCourse Name\t\tave_score\n"); for(i=0;i<N2;i++) printf("\t\t%s\t\t%6.2f\n",name[i],C_Ave[i]); printf("Press any key to return the main menu......\n"); getch(); } /*--------------------------find_max_course()-----------------------*/ void find_max_course(void) { int i,j,t; char *name[]={"math","chinese","english","physics","chemistry"}; clrscr(); for(i=0;i<N2;i++){ t=0; for(j=1;j<N1;j++) if(Stu_Score[t][i]<Stu_Score[j][i]) t=j; printf("%s\t%d\t%6.2f\n",name[i],t+1,Stu_Score[t][i]); } } /*---------------------------fangcha()---------------------------*/ void fangcha(void) { float s1=0,s2=0,f; int i; stu_ave(); for(i=0;i<N1;i++){ s1=s1+S_Ave[i]*S_Ave[i]; s2=s2+S_Ave[i]; } s2/=N1; f=s1/N1-s2*s2; clrscr(); printf("fangcha is %6.2f",f); } /*-------------------print_menu()--------------------*/ void print_menu() { clrscr(); textattr(BLUE*16|YELLOW); gotoxy(15,5); cprintf("1.(I)nput Students' score"); textattr(BLUE*16|YELLOW); gotoxy(15,9); cprintf("2.(S)tudents' average score"); textattr(BLUE*16|YELLOW); gotoxy(15,13); cprintf("3.(C)ourse' average score"); textattr(BLUE*16|YELLOW); gotoxy(15,17); cprintf("4.(Q)uit the system"); } |
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| 218.92.197.* |
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