学生成绩管理系统源代码.doc-资料库

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#include #include #include #include struct student { //结构体定义 int num; char name[10]; char birthday[10]; int Cyuyan; int shujujiegou; struct student *next; }; { struct student *creat_by_input(); struct student *get_last_student(struct student *head); struct student *Print_menu_main() //主菜单 printf(" *********************************************************************\n"); printf(" printf(" printf(" printf(" printf(" printf(" printf(" printf(" printf(" | 1.........输入学生信息 | | 2.........输出学生信息 | | 3.........查找学生信息 | | 4.........修改学生信息 | | 5.........插入学生信息 | | 6.........删除学生信息 | | 7.........排序学生信息 | | 0.........退出系统 | |_ _ _ _ _ _ _ _ _ _ _ _ _ | \n"); \n"); \n"); \n"); \n"); \n"); \n"); \n"); \n"); } struct student *print_table_head() { printf("+----------+----------+----------+----------+-------------+\n"); printf("| 学号 | 姓名 | 出生日期 | printf("+----------+----------+----------+----------+-------------+\n"); c 成绩 |数据结构成绩 |\n"); } struct student *print_table_row(struct student *p) { printf("|%10d|%10s|%10s|%10d|%10d|\n",p->num,p->name,p->birthday,p->Cyuyan,p->shuju jiegou); }

void print_table_bottom() { printf("+----------+----------+----------+----------+-------------+\n"); } struct student * Creat_stu_record() //建立链表 { struct student *plaststu=NULL,*pnewstu; char continue_input='N'; struct student *head=NULL; while(1) { if(head==NULL) head=creat_by_input(); print_table_head(); print_table_row(head); print_table_bottom(); else pnewstu=creat_by_input(); print_table_head(); print_table_row(pnewstu); print_table_bottom(); plaststu=get_last_student(head); plaststu->next=pnewstu;} printf("是否继续输入学生信息？(Y 继续，N 返回菜单)\n"); getchar(); continue_input=getchar(); if(continue_input=='n'||continue_input=='N') system("cls"); Print_menu_main(); break; { } { { } } return head; } struct student *creat_by_input() { struct student *pnewstu=(struct student *)malloc(sizeof(struct student)); printf("请输入学生信息\n"); printf("学号:");scanf("%d",&pnewstu->num);

printf("姓名:");scanf("%s",pnewstu->name); printf("出生年月:");scanf("%s",pnewstu->birthday); printf("请输入学生成绩\n"); printf("C 语言:");scanf("%d",&(pnewstu->Cyuyan)); printf("数据结构:");scanf("%d",&(pnewstu->shujujiegou)); pnewstu->next=NULL; return pnewstu; } struct student *get_last_student(struct student *p ) { } if(p->next==NULL) return p; else return get_last_student(p->next); void Print_Stu_Doc(struct student *head) { struct student *p; char r; print_table_head(); if(head==NULL) { printf("\n No Records\n"); } for(p=head;p;p=p->next) { printf("|%10d|%10s|%10s|%10d|%10d|\n",p->num,p->name,p->birthday,p->Cyuyan,p->shuju jiegou); printf("+----------+----------+----------+----------+-------------+\n");} printf("(按 Enter 键返回主菜单)\n"); getchar(); r=getchar(); if(r!='1') { system("cls"); Print_menu_main(); system("cls"); Print_menu_main(); } else { }

} struct student *search_by_name(struct student *head)//按姓名查找 { char name[10]; struct student *p=head; char continue_input; /*int isfound=0;*/ printf("请输入要查找的姓名："); scanf("%s",name); printf("查找%s\n",name); print_table_head(); while(p!=NULL) { if(strcmp(p->name,name)==0) { print_table_row(p); p=p->next; /* isfound=1; */ break; } p=p->next; } print_table_bottom(); printf("是否继续查找?(Y 继续；N 返回主菜单)\n"); getchar(); continue_input=getchar(); if(continue_input=='n'||continue_input=='N') { system("cls"); Print_menu_main(); search_by_name(head); } else } struct student * search_by_id(struct student *head)//按学号查找 { int id; struct student *p=head; char continue_input; /*int isfound=0;*/

printf("请输入要查找的学号："); scanf("%d",&id); printf("查找%d\n",id); print_table_head(); while(p!=NULL) { if(p->num==id) { print_table_row(p); p=p->next; /*isfound=1;*/ break; } p=p->next; } print_table_bottom(); printf("是否继续查找？(Y 继续；N 返回主菜单)\n"); getchar(); continue_input=getchar(); if(continue_input=='n'||continue_input=='N') { system("cls"); Print_menu_main(); } else search_by_id(head); return head; } struct student*modify_record_by_id(struct student*head)//按学号修改 { struct student *p=head; int id; char continue_input; printf("请输入要修改的学生的学号：\n"); scanf("%d",&id); while(p!=NULL) { if(p->num==id) break; p=p->next; } if(p==NULL)

printf("抱歉，没有学号为%d 的学生\n",id); else { printf("请输入学生信息:\n"); printf("学号:");scanf("%d",&(p->num)); printf("姓名:");scanf("%s",&(p->name)); printf("出生年月:");scanf("%s",&(p->birthday)); printf("请输入学生成绩：\n"); printf("C 语言:");scanf("%d",&(p->Cyuyan)); printf("数据结构:");scanf("%d",&(p->shujujiegou)); print_table_head();print_table_row(p);print_table_bottom();} printf("继续修改学生信息吗?Y 继续；N 返回主菜单\n"); getchar(); continue_input=getchar(); if(continue_input=='y'||continue_input=='Y') creat_by_input(); else { system("cls"); Print_menu_main(); } return head; } struct student*modify_record_by_name(struct student*head)//按姓名修改 { struct student*p=head; char name[10]; char continue_input; printf("请输入要修改的学生的姓名：\n"); scanf("%s",name); while(p!=NULL) { if(strcmp(p->name,name)==0) break; p=p->next; } if(p==NULL) printf("抱歉，没有姓名为%s 的学生\n",name); else { printf("请输入学生信息:\n"); printf("学号:");scanf("%d",&(p->num)); printf("姓名:");scanf("%s",&(p->name));

printf("出生年月:");scanf("%s",&(p->birthday)); printf("请输入学生成绩：\n"); printf("C 语言:");scanf("%d",&(p->Cyuyan)); printf("数据结构:");scanf("%d",&(p->shujujiegou)); print_table_head();print_table_row(p);print_table_bottom();} printf("继续修改学生信息吗?Y 继续；N 返回主菜单\n"); getchar(); continue_input=getchar(); if(continue_input=='y'||continue_input=='Y') creat_by_input(); else { system("cls"); Print_menu_main(); } return head; } struct student *insert_record(struct student *head)//插入 { struct student *ptr1; struct student *ptr,*stud; struct student *ptr2=head; char continue_input='N'; int id; printf("请输入一个学号，在此之前插入学生信息:"); scanf("%d",&id); stud=creat_by_input(); ptr=stud; if(head==NULL) { head=ptr;head->next=NULL; } else if(head->num==id) { ptr->next=head; head=ptr; } else { while(ptr2!=NULL) { ptr1=ptr2; ptr2=ptr1->next;

if(ptr2->num==id) { ptr1->next=ptr; ptr->next=ptr2; break; } } } print_table_head(); print_table_row(ptr); print_table_bottom(); printf("是否继续插入学生信息?(Y 继续 N 返回主菜单)\n"); getchar(); continue_input=getchar(); if(continue_input=='y'||continue_input=='Y') return insert_record(head); system("cls"); Print_menu_main(); return head; else { } } struct student *Delete_record_by_id( struct student *head)//按学号删除 { struct student *p=head,*ppre=NULL; int id; char continue_input; printf("请输入要删除的学号:"); scanf("%d",&id); while(p!=NULL) { if(p->num==id) break; p=p->next; } if(p==NULL) printf("抱歉，没有该学号的学生信息！\n"); else { printf("确定要删除学号为%d 的学生的信息吗？（Y 确定；N 返回主菜单）

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