学生成绩管理系统.zip

#define _CRT_SECURE_NO_WARNINGS #include<stdio.h> #include<string.h> #include<math.h> #include "malloc.h" #include <stdlib.h> #define MAX_LEN 10 /* 字符串最大长度 */ #define STU_NUM 30 /* 最多的学生人数 */ #define COURSE_NUM 6 /* 最多的考试科目数 */ #define LEN sizeof(struct Student) typedef struct Student { long num; /* 每个学生的学号 */ char name[MAX_LEN]; /* 每个学生的姓名 */ float score[COURSE_NUM]; /* 每个学生COURSE_NUM门功课的成绩 */ float sum; /* 每个学生的总成绩 */ float aver; /* 每个学生的平均成绩 */ struct Student *next; }STU; int Menu(void); //创建菜单 void Print(STU *head, int n, int m); //打印函数 void AverSumofEveryStudent(STU *head, int n, int m); //计算每门课程的总分和平均分 void AverSumofEveryCourse(STU *head, int n, int m); //计算每个学生的总分和平均分 STU *SortbyScore(STU *head, int n); //按每个学生的总分由高到低排出名次表 STU *Creat(int n, int m); //创建链表并录入信息 STU *Creat1(int n, int m); STU *SortbyScore1(STU *head, int n); //按每个学生的总分由低到高排出名次表 STU *SortbyNum(STU *head); //按学号由小到大排出成绩表 STU *SortbyName(STU *head, int n); //按姓名的字典顺序排出成绩表 void SearchbyNum(STU *head, int n, int m); //按学号查询学生排名及其考试成绩 void SearchbyName(STU *head, int n, int m); //按姓名查询学生排名及其考试成绩 void StatisticAnalysis(STU *head, int n, int m); //按类别及比例输出 void WritetoFile(STU *head, int n, int m); //将每个学生的纪录信息写入文件 STU *ReadfromFile(STU *head, int *n, int *m); //从文件中读出每个学生的纪录信息并显示 int main() { int n, m; int i; STU *head; //定义头节点 head = (STU *)malloc(LEN); while (1) { i = Menu(); if (i == 1) { system("cls"); //清屏 printf("\t\t\t******************************************************************************\n"); printf("\t\t\tInput student number(n<30):\n"); //输入学生数 printf("\t\t\t"); scanf("%d", &n); printf("\t\t\tInput course number(m<=6):\n"); printf("\t\t\t"); scanf("%d", &m); } switch (i) { case 1: printf("\t\t\tInput student's ID, name and score:\n"); head = Creat(n, m); system("cls"); //清屏 break; case 2: system("cls"); //清屏 AverSumofEveryStudent(head, n, m); break; case 3: system("cls"); //清屏 AverSumofEveryCourse(head, n, m); break; case 4: system("cls"); //清屏 printf("\n\n\n"); printf("\t\t\tSort in ascending order by score:\n"); head = SortbyScore(head, n); Print(head, n, m); break; case 5: system("cls"); //清屏 printf("\n\n\n"); printf("\t\t\tSort in ascending order by score:\n"); head = SortbyScore1(head, n); Print(head, n, m); break; case 6: system("cls"); //清屏 printf("\n\n\n"); printf("\t\t\tSort in ascending order by number:\n"); head = SortbyNum(head); Print(head, n, m); break; case 7: system("cls"); //清屏 printf("\n\n\n"); printf("\t\t\tSort in dictionary order by name:\n"); head = SortbyName(head, n); Print(head, n, m); break; case 8: system("cls"); //清屏 printf("\n\n\n"); printf("\t\t\t******************************************************************************\n"); printf("\t\t\tInput the number you want to search:\n"); SearchbyNum(head, n, m); break; case 9: system("cls"); //清屏 printf("\n\n\n"); printf("\t\t\t******************************************************************************\n"); printf("\t\t\tInput the name you want to search:\n"); SearchbyName(head, n, m); break; case 10: system("cls"); //清屏 StatisticAnalysis(head, n, m); break; case 11: system("cls"); //清屏 printf("\n\n\n"); Print(head, n, m); break; case 12: system("cls"); //清屏 WritetoFile(head, n, m); break; case 13: system("cls"); //清屏 head = ReadfromFile(head, &n, &m); break; case 0: system("cls"); //清屏 printf("\n\n\n"); printf("\t\t\t******************************************************************************\n"); printf("\t\t\tEnd of program!\n"); printf("\t\t\t******************************************************************************\n"); return 0; default: system("cls"); //清屏 printf("\n\n\n"); printf("\t\t\t******************************************************************************\n"); printf("\t\t\tInput error!\n"); printf("\t\t\t******************************************************************************\n"); } } return 0; } // 创建菜单 int Menu(void) { int i; system("title 学生成绩管理系统V7.0 By wyxiang"); printf("\n\n"); printf("\t\t\t 学生成绩管理系统V7.0\n"); printf("\t\t\t******************************************************************************\n"); printf("\t\t\t* Management for Students' scores *\n"); printf("\t\t\t* 1. Input record *\n"); printf("\t\t\t* 2. Caculate total and average score of every course *\n"); printf("\t\t\t* 3. Caculate total and average score of every student *\n"); printf("\t\t\t* 4. Sort in descending order by score *\n"); printf("\t\t\t* 5. Sort in ascending order by score *\n"); printf("\t\t\t* 6. Sort in ascending order by number *\n"); printf("\t\t\t* 7. Sort in dictionary order by name *\n"); printf("\t\t\t* 8. Search by number *\n"); printf("\t\t\t* 9. Search by name *\n"); printf("\t\t\t* 10. Statistic analysis *\n"); printf("\t\t\t* 11. List record *\n"); printf("\t\t\t* 12. Write to a file *\n"); printf("\t\t\t* 13. Read from a file *\n"); printf("\t\t\t* 0. Exit *\n"); printf("\t\t\t******************************************************************************\n"); printf("\n"); printf("\n"); printf("\n"); printf("\n"); printf("\t\t\t*****************Please Input your choice:"); scanf("%d", &i); return i; } // 创建链表 STU *Creat(int n, int m) { STU *head = NULL; STU *p1 = NULL, *p2=NULL; int i, j; // system("cls"); for (i = 1; i<n + 1; i++) { p1 = (STU *)malloc(LEN); printf("\t\t\t"); scanf("%ld", &p1->num); printf("\t\t\t"); scanf("%s", p1->name); for (j = 0; j<m; j++) { printf("\t\t\t"); scanf("%f", &p1->score[j]); } p1->next = NULL; if (i == 1) { head = p2 = p1; } else { p2->next = p1; p2 = p1; } } return(head); } STU *Creat1(int n, int m) { STU *head = NULL; STU *p1=NULL, *p2=NULL; int i = 0, j = 0; // system("cls"); for (i = 1; i<n + 1; i++) { p1 = (STU *)malloc(LEN); p1->next = NULL; if (i == 1) { head = p2 = p1; } else { p2->next = p1; p2 = p1; } } return(head); } void AverSumofEveryStudent(STU *head, int n, int m) { STU *p; int i, j = 1; char ch = '\0'; float sum; p = head; if (head != NULL) { printf("\t\t\t******************************************************************************\n"); for (i = 0; i<m; i++) { p = head; sum = 0.0; do { sum += p->score[i]; p = p->next; } while (p != NULL); printf("\t\t\tcourse %d: sum=%.0f , aver=%.0f\n", j, sum, sum / n); j++;