/*编译环境为vc++6.0----VS2015*/#define _CRT_SECURE_NO_WARNINGS#include#include #include #include #include struct list { char ID[20]; char name[20]; char gender[5]; float score; struct list *next;}; /*文件指针*/char *filename ="'C:\\Users\\ASUS\\Desktop\\myfile.txt";/*文件存储路径*/int re_ID = 0; /*为了检验是否经过了创建学生信息的检查*/struct list *List = NULL; /*表头*/struct list *create(); /*创建学生链表*/struct list *Find_Previous(struct list *p); /*为了删除而使用的查找函数*/struct list *Find_Previously(struct list *p); /*为了添加而使用的查找函数*/struct list *Selectsort(struct list *L); /*插入排序--按照成绩进行排序*/void Print(); /*打印菜单*/void Print_Query(); /*打印查询菜单*/void Exit(); /*退出*/void Querying(); /*查询*/void Help(); /*帮助手册*/void Display(struct list *p); /*打印表*/void Save(struct list *pp); /*将链表写入文件中*/void Query_ID(struct list *p); /*按学号查询*/void Query_Name(struct list *p); /*按姓名查询*/void Query_Gender(struct list *p); /*按性别查询*/void Query_Score(struct list *p); /*按成绩查询*/void Addition(struct list *p); /*添加学生信息*/void Delete(struct list *p); /*删除学生的信息*/void Rebuild(struct list *p); /*删除所有信息*/int check_ID(char ID[]); /*检查学号的输入正确性*/int main(void) { char choice = '\0'; while (1) { system("cls"); fflush(stdin); Print(); scanf("%c", &choice); switch (choice) { case'1': List = create(); break; case'2': Querying(); break; case'3': Selectsort(List); break; case'4': Display(List); break; case'5': Exit(); break; case'6': Help(); break; case'7': Save(List); break; case'8': Addition(Find_Previous(List)); break; case'9': Delete(Find_Previous(List)); break; case'0': Rebuild(List); break; default: printf("没有此选择项，请重新输入！\n"); break; } } return 0;}struct list *create() { char ch = '\0'; struct list *head = NULL; struct list *current = NULL; struct list *previous = NULL; while (1) { printf("请问是否输入学生信息？(Y or N)\n"); scanf(" %c", &ch); if (tolower(ch) == 'n') { puts("你选择了取消输入！\n"); system("pause"); break; } current = (struct list *)malloc(sizeof(struct list)); if (head == NULL) head = current; if (previous != NULL) previous->next = current; puts("请输入学生姓名:"); scanf("%s", current->name); while (1) { puts("请输入学生学号:"); fflush(stdin); scanf("%s", current->ID); if (check_ID(current->ID) == 0) break; else puts("你输入的格式错误，请重新输入!\n"); } while (1) { puts("请输入学生的性别:(注意：boy or girl)"); fflush(stdin); scanf(" %s", current->gender); if (strcmp(current->gender, "boy") == 0 || strcmp(current->gender, "girl") == 0) break; else puts("你输入的格式错误，请重新输入!\n"); } while (1) { printf("请输入学生的成绩:\n"); fflush(stdin); if (scanf("%f", ¤t->score)!=EOF&¤t->score>=0.0) break; else printf("你输入的格式错误，请重新输入!\n"); fflush(stdin); } current->next = NULL; previous = current; } re_ID++; return (head);}void Exit() { /*这个是用来退出*/ int i = 0; printf("退出中"); for (i = 4; i > 0; --i) { Sleep(200); printf("."); } exit(0);}void Save(struct list *pp){ if (re_ID == 0) { printf("请先创建学生信息!\n"); system("pause"); return; } struct list *head = NULL; head = pp; FILE *fp = NULL; if (!(fp = fopen(filename, "wb"))) { fprintf(stderr,"\n打开失败\n"); system("pause"); return; } while (head->next != NULL) { fwrite(head,sizeof(struct list),1,fp); head = head->next; } fclose(fp); printf("数据读入文件完毕\n"); system("pause");}void Display(struct list *p) { if (re_ID == 0) { printf("请先创建学生信息!\n"); system("pause"); return; } struct list *temp = NULL; temp = p; while (temp != NULL) { printf("-----/*姓名*/--------/*学号*/-----/*性别*/-----/*成绩*/-----\n"); printf(" %s %s %s %.2f\n", temp->name, temp->ID,temp->gender,temp->score); temp = temp->next; } system("pause");}void Print() { printf("-----主菜单功能如下:\n"); printf("-----1.输入学生信息\n"); printf("-----2.查询\n"); printf("-----3.排序\n"); printf("-----4.打印学生信息\n"); printf("-----5.退出\n"); printf("-----6.帮助\n"); printf("-----7.数据写入文件\n"); printf("-----8.插入学生信息\n"); printf("-----9.删除学生信息\n"); printf("-----0.重建学生信息\n"); printf("请输入你的选择!\n");}void Help() { puts("Ver3.0-学生信息管理系统\n"); puts("由于本人是新手，所以一定会有很多的问题\n"); puts("如果能告诉我，在下不胜感激\n"); system("pause");}void Print_Query() { printf("-----查询菜单功能如下:\n"); printf("-----1.按学号查询\n"); printf("-----2.按姓名查询\n"); printf("-----3.按性别查询\n"); printf("-----4.按成绩查询\n"); printf("-----5.退出查询\n"); printf("请输入你的选择:\n");}void Querying() { char cho = '\0'; while (1) { system("cls"); fflush(stdin); Print_Query(); scanf("%c", &cho); switch (cho) { case'1': Query_ID(List); break; case'2': Query_Name(List); break; case'3': Query_Gender(List); break; case'4': Query_Score(List); break; case'5': return; break; default: printf("无此选择项!\n"); system("pause"); break; } }}void Query_Name(struct list *p) { if (re_ID == 0) { printf("请先创建学生信息!\n"); system("pause"); return; } struct list *temp = NULL; char na[20]; temp = p; printf("请输入你想要查询的姓名：\n"); scanf("%s", na); while (temp != NULL) { if (strcmp(temp->name, na) == 0) { printf("你的查找如下：\n"); printf("-----/*姓名*/--------/*学号*/-----/*性别*/-----/*成绩*/-----\n"); printf(" %s %s %s %.2f\n", temp->name, temp->ID, temp->gender, temp->score); temp = temp->next; } else temp = temp->next; } system("pause");}void Query_ID(struct list *p) { if (re_ID == 0) { printf("请先创建学生信息!\n"); system("pause"); return; } struct list *temp = NULL; char id[20]; temp = p; while (1) { printf("请输入你想要查询的学号：\n"); fflush(stdin); scanf("%s", id); if (check_ID(id) == 0) break; else puts("你输入的格式错误，请重新输入!"); } while (temp != NULL) { if (strcmp(temp->ID, id) == 0) { printf("你的查找如下：\n"); printf("-----/*姓名*/--------/*学号*/-----/*性别*/-----/*成绩*/-----\n"); printf(" %s %s %s %.2f\n", temp->name, temp->ID, temp->gender, temp->score); temp = temp->next; } else temp = temp->next; } system("pause");}void Query_Gender(struct list *p) { if (re_ID == 0) { printf("请先创建学生信息!\n"); system("pause"); return; } struct list *temp = NULL; char ge[5]; temp = p; while (1) { puts("请输入学生的性别:(注意：boy or girl)"); fflush(stdin); scanf(" %s", ge); if (strcmp(ge, "boy") == 0 || strcmp(ge, "girl") == 0) break; else puts("你输入的格式错误，请重新输入!\n"); } while (temp != NULL) { if (strcmp(temp->gender,ge) == 0) { printf("你的查找如下：\n"); printf("-----/*姓名*/--------/*学号*/-----/*性别*/-----/*成绩*/-----\n"); printf(" %s %s %s %.2f\n", temp->name, temp->ID, temp->gender, temp->score); temp = temp->next; } else temp = temp->next; } system("pause");}void Query_Score(struct list *p) { if (re_ID == 0) { printf("请先创建学生信息!\n"); system("pause"); return; } struct list *temp = NULL; float sc = 0; temp = p; while (1) { puts("请输入学生的成绩:"); fflush(stdin); if (scanf("%f", &sc) != EOF&&sc >= 0.0) break; else puts("你输入的格式错误，请重新输入!\n"); } while (temp != NULL) { if (temp->score == sc) { printf("你的查找如下：\n"); printf("-----/*姓名*/--------/*学号*/-----/*性别*/-----/*成绩*/-----\n"); printf(" %s %s %s %.2f\n", temp->name, temp->ID, temp->gender, temp->score); temp = temp->next; } else temp = temp->next; } system("pause");}struct list *Find_Previously(struct list *p){ if (re_ID == 0) { printf("请先创建学生信息!\n"); system("pause"); return NULL; } struct list *temp = NULL; temp = p; char iidd[20]; while (1) { printf("请输入你想要查询的学号：(注意：第一条信息之前不能插入信息)\n"); fflush(stdin); scanf("%s", iidd); if (check_ID(iidd) == 0) break; else puts("你输入的格式错误，请重新输入!\n"); } while (temp != NULL) { if (strcmp(temp->ID, iidd) == 0) { break; } else temp = temp->next; } return temp;}struct list *Find_Previous(struct list *p) { if (re_ID == 0) { printf("请先创建学生信息!\n"); system("pause"); return NULL; } struct list *temp = NULL; temp = p; char iidd[20]; while (1) { Display(List); printf("请输入你想要插入之前的学号：\n"); fflush(stdin); scanf("%s", iidd); if (check_ID(iidd) == 0) break; else puts("你输入的格式错误，请重新输入!\n"); } while (temp != NULL) { if (strcmp(temp->next->ID, iidd) == 0) { break; } else temp = temp->next; } return temp;}void Delete(struct list *p) { if (re_ID == 0) { printf("请先创建学生信息!\n"); system("pause"); return; } struct list *temp = NULL; temp = p->next; p->next = temp->next; free(temp);}void Rebuild(struct list *p) { if (re_ID == 0) { printf("请先创建学生信息!\n"); return; } struct list *temp = NULL; struct list *tt = NULL; temp = p; p->next = NULL; while (temp != NULL) { tt = temp->next; free(temp); temp = tt; } puts("重建学生信信息完成!\n"); re_ID = 0; system("pause");}void Addition(struct list *p) { if (re_ID == 0) { printf("请先创建学生信息!\n"); system("pause"); return; } struct list *temp = NULL; temp = (struct list *)malloc(sizeof(struct list)); if (temp == NULL) { fprintf(stderr, "空间不足！\n"); exit(0); } puts("请输入学生姓名:"); scanf("%s", temp->name); while (1) { puts("请输入学生学号:"); fflush(stdin); scanf("%s", temp->ID); if (check_ID(temp->ID) == 0) break; else puts("你输入的格式错误，请重新输入!\n"); } while (1) { puts("请输入学生的性别:(注意：boy or girl)"); fflush(stdin); scanf("%s", temp->gender); if (strcmp(temp->gender, "boy") == 0 || strcmp(temp->gender, "girl") == 0) break; else puts("你输入的格式错误，请重新输入!\n"); } while (1) { printf("请输入学生的成绩:"); fflush(stdin); if (scanf("%f", &temp->score) != EOF&&temp->score >= 0.0) break; else printf("你输入的格式错误，请重新输入!\n"); continue; } temp->next = p->next; p->next = temp;}int check_ID(char ID[]) { int i = 0, flag = 0; while (ID[i] != '\0') { if (ID[i]<'0' || ID[i]>'9') { flag = 1; break; } else i++; } return flag;}struct list *Selectsort(struct list *L){ float temp; struct list *p, *q, *m; if (!L->next || !L->next->next)return L; p = L->next; while (p->next) { m = p; q = p->next; while (q) { if (q->score score)m = q; q = q->next; } if (p != m) { temp = m->score; m->score = p->score; p->score = temp; } p = p->next; } return L;}
最后，附上几张测试图:
