| #include <stdio.h>
#include <string.h>
#include <stdlib.h> #define MAX_LENTH_IN_CLASS 1000 #define COMMAND_NEW 1
#define COMMAND_ADD 2
#define COMMAND_DELETE 3
#define COMMAND_SEARCH 4
#define COMMAND_SORT 5
#define COMMAND_SEARCHALL 6
#define COMMAND_QUIT 7 //学生
struct Student {
long id;
char* name;
int mathResult;
int progResult;
}; struct StudentRecord {
Student student;
bool exist;
};
//档案
StudentRecord records[MAX_LENTH_IN_CLASS];
//初始化班级，填充一些数据
void initStudentRecord() {
for (int i=0; i<MAX_LENTH_IN_CLASS; i++) {
records[i].student.id = -1;
records[i].student.mathResult = -1;
records[i].student.progResult = -1;
records[i].exist = false;
} records[0].student.id = 1022423;
records[0].student.name = strdup("八红");
records[0].student.mathResult = 100;
records[0].student.progResult = 100;
records[0].exist = true;
records[1].student.id = 1022424;
records[1].student.name = strdup("扬扬");
records[1].student.mathResult = 40;
records[1].student.progResult = 80;
records[1].exist = true;
records[2].student.id = 1022425;
records[2].student.name = strdup("猪头冯");
records[2].student.mathResult = 89;
records[2].student.progResult = 90;
records[2].exist = true;
records[3].student.id = 1022426;
records[3].student.name = strdup("涂马路");
records[3].student.mathResult = 9;
records[3].student.progResult = 8;
records[3].exist = true;
records[4].student.id = 1022428;
records[4].student.name = strdup("你翠");
records[4].student.mathResult = 79;
records[4].student.progResult = 89;
records[4].exist = true;
records[5].student.id = 1022429;
records[5].student.name = strdup("强牛");
records[5].student.mathResult = 100;
records[5].student.progResult = 99;
records[5].exist = true;
records[6].student.id = 1022430;
records[6].student.name = strdup("胡子");
records[6].student.mathResult = 99;
records[6].student.progResult = 100;
records[6].exist = true;
} //#################查询档案#############################################
void showRecords() {
printf("/n/n/n[档案查询]/n");
printf("------------------------------------------------------------------/n");
printf("学生档案信息/n");
for (int i=0; i<MAX_LENTH_IN_CLASS; i++) {
if (records[i].exist == true) {
printf("学号:%8d 姓名:%10s 数学:%3d分 编程:%3d分/n",records[i].student.id,
records[i].student.name,records[i].student.mathResult,records[i].student.progResult);
}
}
printf("------------------------------------------------------------------/n");
}
//###################################################################
//#################增加记录#############################################
bool isExistID(int newID) {
for (int i=0; i<MAX_LENTH_IN_CLASS; i++) {
if (records[i].exist == true) {
if (records[i].student.id == newID) {
return true;
}
}
}
return false;
}
void addRecord() {
for (int i=0; i<MAX_LENTH_IN_CLASS; i++) {
if (records[i].exist == false) {
bool goodRecord = false;
while (!goodRecord) {
fflush(stdin);
int studentID;
printf("/n-------------------------");
printf("/n请输入学号:");
scanf("%d",&studentID);
bool exist = isExistID(studentID);
if (exist) {
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/n");
printf("学号相同！！请重新输入!/n");
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/n");
} else {
records[i].student.id = studentID;
fflush(stdin);
printf("请输入姓名:");
char name[20];
scanf("%s",&name);
records[i].student.name = strdup(name);
int mathResult;
fflush(stdin);
printf("请输入数学成绩:");
scanf("%d",&mathResult);
records[i].student.mathResult = mathResult;
int progResult;
fflush(stdin);
printf("请输入编程成绩:");
scanf("%d",&progResult);
records[i].student.progResult = progResult;
records[i].exist = true;
goodRecord = true;
}
}
printf("/n已成功添加记录: 学号:%d 姓名:%s 数学:%d分 编程:%d/n分",records[i].student.id,
records[i].student.name,records[i].student.mathResult,records[i].student.progResult);
printf("-------------------------------------/n");
return;
}
}
}
void enterAddRecord() {
int ADD = 1;
int SHOW = 2;
int QUIT = 3; int d;
while (d!=QUIT) {
printf("/n/n/n子菜单---");
printf("[添加新记录]/n");
printf("1 [添加]/n");
printf("2 [查询档案]/n");
printf("3 [返回主菜单]/n");
printf("请输入命令:");
scanf("%d",&d);
if (d == ADD) {
addRecord();
} else if (d == SHOW) {
showRecords();
}
}
} //################################################################### //#################删除记录#############################################
int findIndex(int oldID) {
for (int i=0; i<MAX_LENTH_IN_CLASS; i++) {
if (records[i].exist == true) {
if (records[i].student.id == oldID) {
return i;
}
}
}
return -1;
} void deleteID(int oldID) {
for (int i=0; i<MAX_LENTH_IN_CLASS; i++) {
if (records[i].exist == true) {
if (records[i].student.id == oldID) {
records[i].exist = false;
//此处如果不用free函数,将有内存泄露,records[i].student.name所指向的char*需要释放!!!
free(records[i].student.name);
}
}
}
} void deleteRecord() {
int studentID;
printf("/n-------------------------");
printf("/n请输入学号:");
fflush(stdin);
scanf("%d",&studentID);
bool exist = isExistID(studentID);
if (!exist) {
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/n");
printf("没有此学号！！请重新查询档案/n");
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/n");
} else {
int i = findIndex(studentID);
printf("/n已成功删除记录: 学号:%d 姓名:%s 数学:%d分 编程:%d/n分",records[i].student.id,
records[i].student.name,records[i].student.mathResult,records[i].student.progResult);
printf("-------------------------------------/n");
deleteID(studentID);
}
}
void enterDeleteRecord() {
int DELETE = 1;
int SHOW = 2;
int QUIT = 3;
int d;
while (d!=QUIT) {
printf("/n/n/n子菜单---");
printf("[删除记录]/n");
printf("1 [删除]/n");
printf("2 [查询档案]/n");
printf("3 [返回主菜单]/n");
printf("请输入命令:");
scanf("%d",&d);
if (d == DELETE) {
deleteRecord();
} else if (d == SHOW) {
showRecords();
}
}
}
//###################################################################
//#################搜索记录#############################################
void searchRecord() {
int studentID;
printf("/n/n/n请输入要搜索的学号:");
fflush(stdin);
scanf("%d",&studentID);
bool exist = isExistID(studentID);
if (!exist) {
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/n");
printf("没有此学号！！请重新查询档案/n");
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/n");
} else {
int i = findIndex(studentID);
printf("-------------------------------------/n");
printf("/n搜索的结果: /n学号:%d /b/n姓名:%s /n数学:%d /n编程:%d/n/n",records[i].student.id,
records[i].student.name,records[i].student.mathResult,records[i].student.progResult);
printf("-------------------------------------/n");
}
}
void enterSearchRecord() {
int SEARCH = 1;
int QUIT = 2; int d;
while (d!=QUIT) {
printf("/n/n/n子菜单---");
printf("[搜索记录]/n");
printf("1 [搜索]/n");
printf("2 [返回主菜单]/n");
printf("请输入命令:");
scanf("%d",&d);
if (d == SEARCH) {
searchRecord();
}
}
}
//#####################################################################
//#################记录排序#############################################
#define SORT_BY_ID 1
#define SORT_BY_MATH 2
#define SORT_BY_PROG 3 //冒泡排序
void Bubble_sort(int SORT) {
StudentRecord t;
int i,j;
if (SORT == SORT_BY_ID) {
for (j=0;j<MAX_LENTH_IN_CLASS;j++) {
for (i=0;i<MAX_LENTH_IN_CLASS-j-1;i++) {
if (records[i].student.id>records[i+1].student.id) {
t=records[i];
records[i]=records[i+1];
records[i+1]=t;
}
}
}
}else if (SORT== SORT_BY_MATH) {
for (j=0;j<MAX_LENTH_IN_CLASS;j++) {
for (i=0;i<MAX_LENTH_IN_CLASS-j-1;i++) {
if (records[i].student.mathResult>records[i+1].student.mathResult) {
t=records[i];
records[i]=records[i+1];
records[i+1]=t;
}
}
}
}else if (SORT== SORT_BY_PROG) {
for (j=0;j<MAX_LENTH_IN_CLASS;j++) {
for (i=0;i<MAX_LENTH_IN_CLASS-j-1;i++) {
if (records[i].student.progResult>records[i+1].student.progResult) {
t=records[i];
records[i]=records[i+1];
records[i+1]=t;
}
}
}
}
}
void sortRecordsByID() {
int studentID;
printf("/n/n/n请输入要搜索的学号:");
fflush(stdin);
scanf("%d",&studentID);
bool exist = isExistID(studentID);
if (!exist) {
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/n");
printf("没有此学号！！请重新查询档案/n");
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/n");
} else {
int i = findIndex(studentID);
printf("-------------------------------------/n");
printf("/n搜索的结果: /n学号:%d /b/n姓名:%s /n数学:%d /n编程:%d/n/n",records[i].student.id,
records[i].student.name,records[i].student.mathResult,records[i].student.progResult);
printf("-------------------------------------/n");
}
}
void showSortRecords() {
printf("/n[排序结果]/n");
printf("------------------------------------------------------------------/n");
printf("学生档案信息/n");
for (int i=0; i<MAX_LENTH_IN_CLASS; i++) {
if (records[i].exist == true) {
printf("学号:%8d 姓名:%10s 数学:%3d分 编程:%3d分/n",records[i].student.id,
records[i].student.name,records[i].student.mathResult,records[i].student.progResult);
}
}
printf("------------------------------------------------------------------/n");
} void enterSortRecords() {
int QUIT = 4; int d;
while (d!=QUIT) {
printf("/n/n子菜单---");
printf("[搜索记录]/n");
printf("1 [按学号排序]/n");
printf("2 [按数学成绩排序]/n");
printf("3 [按编程成绩排序]/n");
printf("4 [返回主菜单]/n");
printf("请输入命令:");
scanf("%d",&d);
if (d == SORT_BY_ID) {
Bubble_sort(SORT_BY_ID);
showSortRecords();
} else if (d == SORT_BY_MATH) {
Bubble_sort(SORT_BY_MATH);
showSortRecords();
}
else if (d == SORT_BY_PROG) {
Bubble_sort(SORT_BY_PROG);
showSortRecords();
}
}
}
//##################################################################### //解析用户输入的命令
void parseCommand(int command) {
if (command==COMMAND_SEARCHALL) {
showRecords();
} else if (command == COMMAND_ADD) {
enterAddRecord();
} else if (command == COMMAND_DELETE) {
enterDeleteRecord();
} else if (command == COMMAND_SEARCH) {
enterSearchRecord();
} else if (command == COMMAND_NEW) {
printf("/n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/n");
printf("档案已存在,请直接操作!/n");
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/n/n");
} else if (command == COMMAND_SORT) {
enterSortRecords();
}
} //main
int main() {
//初始化
initStudentRecord();
//开始主循环
int command;
printf("学生管理系统1.00/n");
while (command!=COMMAND_QUIT) {
printf("/n/n/n######################/n");
printf("主菜单/n");
printf("1 [创建档案]/n");
printf("2 [添加新记录]/n");
printf("3 [删除记录]/n");
printf("4 [搜索记录]/n");
printf("5 [档案排序]/n");
printf("6 [档案查询]/n");
printf("7 [离开]/n");
printf("请输入命令:");
scanf("%d",&command);
if (command!=COMMAND_QUIT) {
parseCommand(command);
}
}
printf("/n再见");
return 0;
} |
