学生成绩管理系统（大一大作业）

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功能

实现添加，排序，修改，保存等功能

库函数

#include<stdio.h>
#include<stdlib.h>
#include<windows.h>
#include<string.h>

头文件

#define functioncreate(major) void major##compare(mana mn){\int i,j,sum=mn->sum;\for(i=0;i<sum-1;i++)\for(j=0;j<sum-i-1;j++)\if(mn->student[j].grade->major<mn->student[j+1].grade->major)\swap(&mn->student[j],&mn->student[j+1]);\
}
typedef struct a1 {	//学生成绩信息int Chinese;int Math;int English;int Physics;int Chemistry;int Organism;int All;
}*grade;
typedef struct a2 {	//学生信息char name[10];int stunum;grade grade;int namelong;
}*student;
typedef struct a3{	//全体学生信息int sum;student student;int capacity;
}*mana;
void setpos(short x, short y);	//设置位置
void init();	//初始化
void welcome();	//欢迎界面
void start();	//开始
void menu();	//菜单
void addstu(mana mn);//加入
void initmana(mana mn);// 初始化
void exportcapacity(mana mn);//扩容
void modifystu(mana mn);//修改个人
void showsin(student stu,int i);//展示单人
void showall(mana mn);//展示全部
void clean(mana mn);//清空
void swap(student p1, student p2);//交换
void compare(mana mn);//比较
void initstu(student mn);//初始化学生信息
void stunumcompare(mana mn);//学号排序
void save(mana mn);//保存
void read(mana mn);//读取
void cpy(char*a1,char*a2);//复制字符串

函数实现

void setpos(short x, short y) {HANDLE mn = GetStdHandle(STD_OUTPUT_HANDLE);COORD pos = { x,y };SetConsoleCursorPosition(mn, pos);
}
void init() {HANDLE hOutput = GetStdHandle(STD_OUTPUT_HANDLE);//影藏光标操作CONSOLE_CURSOR_INFO CursorInfo;GetConsoleCursorInfo(hOutput, &CursorInfo);//获取控制台光标信息CursorInfo.bVisible = false; //隐藏控制台光标SetConsoleCursorInfo(hOutput, &CursorInfo);//设置控制台光标状态
}
void welcome() {init();system("title 学生成绩管理系统");system("mode con cols=100 lines=30");setpos(35,10);printf("欢迎来到学生成绩管理系统");setpos(40, 17);system("pause");
}
void menu() {system("cls");setpos(30, 5);printf("请点击相应按键决定您的下一步操作");setpos(30,10);printf("1.添加新学生-------2.清空");setpos(30, 12);printf("3.排序---------------4.无");setpos(30, 14);printf("5.修改学生信息-----6.查看学生成绩");setpos(30, 16);printf("------------0.退出-----------");setpos(38, 20);
}
void initmana(mana mn) {mn->capacity = 0;mn->student = NULL;mn->sum = 0;
}
void exportcapacity(mana mn) {if (mn->capacity > mn->sum)return;int capacity = mn->capacity == 0 ? 1 : 2 * mn->capacity;mn->capacity = capacity;mn->student = (student)realloc(mn->student, sizeof(struct a2) * capacity);
}
void initstu(student mn) {student now = mn;int sum = 0;setpos(30, 10);printf("请输入新学生的姓名(拼音):");scanf("%s", now->name);now->namelong = strlen(now->name);system("cls");setpos(35, 10);printf("请输入新学生的学号:");scanf("%d", &(now->stunum));system("cls");setpos(35, 10);printf("请输入语文成绩:");scanf("%d", &(now->grade->Chinese));sum += now->grade->Chinese;system("cls");setpos(35, 10);printf("请输入数学成绩:");scanf("%d", &(now->grade->Math));sum += now->grade->Math;system("cls");setpos(35, 10);printf("请输入英语成绩:");scanf("%d", &(now->grade->English));sum += now->grade->English;system("cls");setpos(35, 10);printf("请输入物理成绩:");scanf("%d", &(now->grade->Physics));sum += now->grade->Physics;system("cls");setpos(35, 10);printf("请输入化学成绩:");scanf("%d", &(now->grade->Chemistry));sum += now->grade->Chemistry;system("cls");setpos(35, 10);printf("请输入生物成绩:");scanf("%d", &(now->grade->Organism));sum += now->grade->Organism;now->grade->All = sum;system("cls");
}
void stunumcompare(mana mn)
{int i, j, sum = mn->sum;for (i = 0; i < sum - 1; i++) {for (j = 0; j < sum - i - 1; j++) {if (mn->student[j].stunum < mn->student[j + 1].stunum)swap(&mn->student[j], &mn->student[j + 1]);}}
}
void addstu(mana mn) {system("cls");exportcapacity(mn);mn->student[mn->sum].grade = (grade)malloc(sizeof(struct a1));initstu(&mn->student[mn->sum]);mn->sum++;setpos(40, 10);printf("加入完成");setpos(40, 12);system("pause");system("cls");
}void modifystu(mana mn) {system("cls");setpos(30, 10);printf("请输入你要修改的学生名字(拼音):");char s[10];scanf("%s", s);int i;for (i = 0; i < mn->sum; i++) {if (strcmp(s, mn->student[i].name)==0)break;}system("cls");if (i == mn->sum) {setpos(30, 10);printf("查无此人");return;}student now = &(mn->student[i]);initstu(now);
}
void showsin(student stu,int i) {//姓名，学号，语数英物化生顺序setpos(25, 5 + 2 * i);printf("%s", stu->name);setpos(30, 5 + 2 * i);printf("%d", stu->stunum);setpos(35, 5 + 2 * i);printf("%d", stu->grade->Chinese);setpos(40, 5 + 2 * i);printf("%d", stu->grade->Math);setpos(45, 5 + 2 * i);printf("%d", stu->grade->English);setpos(50, 5 + 2 * i);printf("%d", stu->grade->Physics);setpos(55, 5 + 2 * i);printf("%d", stu->grade->Chemistry);setpos(60, 5 + 2 * i);printf("%d", stu->grade->Organism);setpos(65, 5 + 2 * i);printf("%d", stu->grade->All);
}
void showall(mana mn) {int i = 0, sum = mn->sum;if (sum == 0) {setpos(45, 13);printf("暂空");}system("cls");setpos(25,3);printf("姓名");setpos(30, 3);printf("学号");setpos(35, 3);printf("语文");setpos(40, 3);printf("数学");setpos(45, 3);printf("英语");setpos(50, 3);printf("物理");setpos(55, 3);printf("化学");setpos(60, 3);printf("生物");setpos(65, 3);printf("总分");for (i = 0; i < sum; i++)showsin(&mn->student[i], i);setpos(50, 25);system("pause");system("cls");
}
void clean(mana mn) {system("cls");free(mn->student);mn->student = NULL;mn->capacity = mn->sum = 0;setpos(40, 14);printf("清空成功");system("pause");
}
void swap(student p1, student p2) {struct a2 mn = *p1;*p1 = *p2;*p2 = mn;
}
functioncreate(Math)
functioncreate(Chinese)
functioncreate(English)
functioncreate(Physics)
functioncreate(Chemistry)
functioncreate(Organism)
functioncreate(All)
void compare(mana mn) {system("cls");setpos(37, 10);printf("请选择您的排序方式");setpos(35, 12);printf("1.语文");setpos(45, 12);printf("2.数学");setpos(35, 14);printf("3.英语");setpos(45, 14);printf("4.物理");setpos(35, 16);printf("5.化学");setpos(45, 16);printf("6.生物");setpos(35, 18);printf("7.学号");setpos(45, 18);printf("8.总分");setpos(40, 20);int a;scanf("%d", &a);switch (a) {case 1:Chinesecompare(mn); break;case 2:Mathcompare(mn); break;case 3:Englishcompare(mn); break;case 4:Physicscompare(mn); break;case 5:Chemistrycompare(mn); break;case 6:Organismcompare(mn); break;case 7:stunumcompare(mn); break;case 8:Allcompare(mn); break;}system("cls");setpos(40, 14);printf("排序完成，请自行查看");setpos(40, 15);system("pause");
}
void start() {welcome();mana mn = (mana)malloc(sizeof(struct a3));initmana(mn);read(mn);int choose;do {menu();scanf("%d", &choose);switch (choose) {case 1:addstu(mn); break;case 2:clean(mn); break;case 3:compare(mn); break;case 5:modifystu(mn); break;case 6:showall(mn); break;case 0:break;}} while (choose);save(mn);
}
void save(mana mn) {FILE* file = fopen("save.txt", "wb");int i;for (i = 0; i < mn->sum; i++) {//先存名字长度，再存学号，再存名字,最后存成绩fwrite(&((mn->student + i)->namelong), sizeof(int), 1, file);fwrite(&((mn->student+i)->stunum), sizeof(int), 1, file);fwrite((mn->student + i)->name, (mn->student + i)->namelong, 1, file);fwrite((mn->student+i)->grade, sizeof(struct a1), 1, file);}fclose(file);
}
void cpy(char* a1, char* a2,int sum) {while (sum--) {*a1 = *a2;a1++;a2++;}
}
void read(mana mn) {FILE* file = fopen("save.txt", "rb");int i;char arr[10];while (fread(&i, sizeof(int), 1, file)) {exportcapacity(mn);mn->student[mn->sum].namelong = i;mn->student[mn->sum].grade = (grade)malloc(sizeof(struct a1));fread(&i, sizeof(int), 1, file);mn->student[mn->sum].stunum = i;fread(arr, sizeof(char) * (mn->student[mn->sum].namelong), 1, file);cpy(mn->student[mn->sum].name, arr, mn->student[mn->sum].namelong);mn->student[mn->sum].name[mn->student->namelong] = '\0';fread(mn->student[mn->sum].grade, sizeof(struct a1), 1, file);mn->sum++;}fclose(file);
}