2022-07-04 23:38 增加对学生、课程、成绩等是否存在的检测
This commit is contained in:
parent
81603a64b5
commit
0ddf037a96
@ -17,7 +17,7 @@ bool getConnection(std::string& pwd, _ConnectionPtr& connection) {
|
||||
wprintf(L"Description = %s\n", (wchar_t*)err.Description());
|
||||
}
|
||||
if (!isPwdTrue) {//密码错误，连接失败（打开连接失败，跳出try块执行）
|
||||
wprintf(L"密码错误！");
|
||||
wprintf(L"密码错误！\n");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
@ -34,7 +34,7 @@ bool getConnection(std::string& pwd, _ConnectionPtr& connection) {
|
||||
wprintf(L"Description = %s\n", (wchar_t*)err.Description());
|
||||
}
|
||||
if (!isPwdTrue) {//验证失败，连接失败（打开连接失败，跳出try块执行）
|
||||
wprintf(L"验证失败！");
|
||||
wprintf(L"验证失败！\n");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
167
Menu.cpp
167
Menu.cpp
@ -80,55 +80,120 @@ void studentGradeMenu(_ConnectionPtr connection) {
|
||||
|
||||
printf("\n");
|
||||
|
||||
|
||||
|
||||
string stuId, courseId;
|
||||
string stuClass, courseName;
|
||||
double grade = -1;
|
||||
size_t size;
|
||||
Student* student;
|
||||
Course* course;
|
||||
vector<Grade>* v;
|
||||
switch (opt) {
|
||||
case 1://输入学生成绩
|
||||
printf("请输入学号：");
|
||||
cin >> stuId;
|
||||
student = getStudentById(connection, stuId);
|
||||
if (student == NULL) {
|
||||
printf("该学生不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入课程名：");
|
||||
cin >> courseId;
|
||||
cin >> courseName;
|
||||
course = getCourseByName(connection, courseName);
|
||||
if (course == NULL) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入分数(0-100)：");
|
||||
while (!(cin >> grade) || (opt < 0) || (opt > 100)) {
|
||||
while (!(cin >> grade) || (grade < 0) || (grade > 100)) {
|
||||
cout << "输入错误！请重新输入：";
|
||||
cin.clear();
|
||||
while (cin.get() != '\n');
|
||||
}
|
||||
addGrade(connection, *new Grade(stuId, courseId, doubleToString(grade)));
|
||||
|
||||
addGrade(connection, *new Grade(stuId, course->getId(), doubleToString(grade)));
|
||||
printf("添加成功！\n");
|
||||
break;
|
||||
case 2://获取学生平均成绩
|
||||
printf("请输入学号：");
|
||||
cin >> stuId;
|
||||
student = getStudentById(connection, stuId);
|
||||
if (student == NULL) {
|
||||
printf("该学生不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("学生平均成绩为：%.2lf\n", getOnesAvgGrade(connection, stuId));
|
||||
break;
|
||||
case 3://获取学生总成绩
|
||||
printf("请输入学号：");
|
||||
cin >> stuId;
|
||||
student = getStudentById(connection, stuId);
|
||||
if (student == NULL) {
|
||||
printf("该学生不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("学生总成绩为：%.2lf\n", getOnesAllGrade(connection, stuId));
|
||||
break;
|
||||
case 4://获取班级平均分
|
||||
printf("请输入班级：");
|
||||
cin >> stuClass;
|
||||
v = getGradeByStuClass(connection, stuClass);
|
||||
if (v == NULL) {
|
||||
printf("该班级不存在或无成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入课程名：");
|
||||
cin >> courseName;
|
||||
course = getCourseByName(connection, courseName);
|
||||
if (course == NULL) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
cout << stuClass << " 班级 " << courseName << " 课程的平均分为：" << getClassAvgGrade(connection, stuClass, courseName) << "\n";
|
||||
break;
|
||||
case 5://获取班级最高分
|
||||
printf("请输入班级：");
|
||||
cin >> stuClass;
|
||||
v = getGradeByStuClass(connection, stuClass);
|
||||
if (v == NULL) {
|
||||
printf("该班级不存在或无成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入课程名：");
|
||||
cin >> courseName;
|
||||
course = getCourseByName(connection, courseName);
|
||||
if (course == NULL) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
cout << stuClass << " 班级 " << courseName << " 课程的最高分为：" << getClassMaxGrade(connection, stuClass, courseName) << "\n";
|
||||
break;
|
||||
case 6://获取班级最低分
|
||||
printf("请输入班级：");
|
||||
cin >> stuClass;
|
||||
v = getGradeByStuClass(connection, stuClass);
|
||||
if (v == NULL) {
|
||||
printf("该班级不存在或无成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入课程名：");
|
||||
cin >> courseName;
|
||||
course = getCourseByName(connection, courseName);
|
||||
if (course == NULL) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
cout << stuClass << " 班级 " << courseName << " 课程的最低分为：" << getClassMinGrade(connection, stuClass, courseName) << "\n";
|
||||
break;
|
||||
case 7://获取班级成绩
|
||||
@ -136,9 +201,10 @@ void studentGradeMenu(_ConnectionPtr connection) {
|
||||
cin >> stuClass;
|
||||
v = getGradeByStuClass(connection, stuClass);
|
||||
if (v == NULL) {
|
||||
printf("该班级不存在！\n");
|
||||
printf("该班级不存在或无成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
size = v->size();
|
||||
cout << "学号\t" << "课程名\t" << "成绩\n";
|
||||
for (size_t i = 0; i < size; i++) {
|
||||
@ -188,10 +254,17 @@ void studentGradeExternMenu(_ConnectionPtr connection) {
|
||||
vector<Grade>* v;
|
||||
Grade* gra;
|
||||
Course* course;
|
||||
Student* student;
|
||||
switch (opt) {
|
||||
case 1://删除某学生某科成绩
|
||||
printf("请输入学号：");
|
||||
cin >> stuId;
|
||||
student = getStudentById(connection, stuId);
|
||||
if (student == NULL) {
|
||||
printf("该学生不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入课程名：");
|
||||
cin >> courseName;
|
||||
course = getCourseByName(connection, courseName);
|
||||
@ -199,12 +272,31 @@ void studentGradeExternMenu(_ConnectionPtr connection) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
gra = getOnesGrade(connection, stuId, course->getId());
|
||||
if (gra == NULL) {
|
||||
printf("该学生不存在该课程的成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
deleteOnesGrade(connection, stuId, course->getId());
|
||||
printf("删除成功！\n");
|
||||
break;
|
||||
case 2://删除某学生成绩
|
||||
printf("请输入学号：");
|
||||
cin >> stuId;
|
||||
student = getStudentById(connection, stuId);
|
||||
if (student == NULL) {
|
||||
printf("该学生不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
v = getGradeByStuId(connection, stuId);
|
||||
if (v == NULL) {
|
||||
printf("该学生不存在成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
deleteGradeByStuId(connection, stuId);
|
||||
printf("删除成功！\n");
|
||||
break;
|
||||
@ -216,12 +308,25 @@ void studentGradeExternMenu(_ConnectionPtr connection) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
v = getGradeByCourseId(connection, course->getId());
|
||||
if (v == NULL) {
|
||||
printf("该课程不存在成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
deleteGradeByCourseId(connection, course->getId());
|
||||
printf("删除成功！\n");
|
||||
break;
|
||||
case 4://更改某学生某科成绩
|
||||
printf("请输入学号：");
|
||||
cin >> stuId;
|
||||
student = getStudentById(connection, stuId);
|
||||
if (student == NULL) {
|
||||
printf("该学生不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入课程名：");
|
||||
cin >> courseName;
|
||||
course = getCourseByName(connection, courseName);
|
||||
@ -229,18 +334,32 @@ void studentGradeExternMenu(_ConnectionPtr connection) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
gra = getOnesGrade(connection, stuId, course->getId());
|
||||
if (gra == NULL) {
|
||||
printf("该学生不存在该课程的成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入新分数(0-100)：");
|
||||
while (!(cin >> grade) || (opt < 0) || (opt > 100)) {
|
||||
cout << "输入错误！请重新输入：";
|
||||
cin.clear();
|
||||
while (cin.get() != '\n');
|
||||
}
|
||||
|
||||
updateOnesGrade(connection, stuId, course->getId(), doubleToString(grade));
|
||||
printf("更改成功！\n");
|
||||
break;
|
||||
case 5://查询某学生某科成绩
|
||||
printf("请输入学号：");
|
||||
cin >> stuId;
|
||||
student = getStudentById(connection, stuId);
|
||||
if (student == NULL) {
|
||||
printf("该学生不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入课程名：");
|
||||
cin >> courseName;
|
||||
course = getCourseByName(connection, courseName);
|
||||
@ -248,22 +367,31 @@ void studentGradeExternMenu(_ConnectionPtr connection) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
gra = getOnesGrade(connection, stuId, course->getId());
|
||||
if (gra == NULL) {
|
||||
printf("该条记录不存在！\n");
|
||||
printf("该学生不存在该课程的成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
cout << "学号\t" << "课程名\t" << "成绩\n";
|
||||
cout << (*gra).toString() << "\n";
|
||||
break;
|
||||
case 6://查询某学生成绩
|
||||
printf("请输入学号：");
|
||||
cin >> stuId;
|
||||
v = getGradeByStuId(connection, stuId);
|
||||
if (v == NULL) {
|
||||
student = getStudentById(connection, stuId);
|
||||
if (student == NULL) {
|
||||
printf("该学生不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
v = getGradeByStuId(connection, stuId);
|
||||
if (v == NULL) {
|
||||
printf("该学生不存在成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
size = v->size();
|
||||
cout << "学号\t" << "课程名\t" << "成绩\n";
|
||||
for (size_t i = 0; i < size; i++) {
|
||||
@ -278,11 +406,13 @@ void studentGradeExternMenu(_ConnectionPtr connection) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
v = getGradeByCourseId(connection, course->getId());
|
||||
if (v == NULL) {
|
||||
printf("该课程不存在对应成绩！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
size = v->size();
|
||||
cout << "学号\t" << "课程名\t" << "成绩\n";
|
||||
for (size_t i = 0; i < size; i++) {
|
||||
@ -295,6 +425,7 @@ void studentGradeExternMenu(_ConnectionPtr connection) {
|
||||
printf("无成绩记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
size = v->size();
|
||||
cout << "学号\t" << "课程名\t" << "成绩\n";
|
||||
for (size_t i = 0; i < size; i++) {
|
||||
@ -332,10 +463,17 @@ void courseMenu(_ConnectionPtr connection) {
|
||||
size_t size;
|
||||
string courseId, courseName;
|
||||
vector<Course>* v;
|
||||
Course* course;
|
||||
switch (opt) {
|
||||
case 1://添加课程
|
||||
printf("请输入课程号：");
|
||||
cin >> courseId;
|
||||
course = getCourseById(connection,courseId);
|
||||
if (course != NULL) {
|
||||
printf("该课程已存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入课程名：");
|
||||
cin >> courseName;
|
||||
addCourse(connection, *new Course(courseId, courseName));
|
||||
@ -344,12 +482,24 @@ void courseMenu(_ConnectionPtr connection) {
|
||||
case 2://删除课程
|
||||
printf("请输入课程号：");
|
||||
cin >> courseId;
|
||||
course = getCourseById(connection, courseId);
|
||||
if (course == NULL) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
deleteCourse(connection, courseId);
|
||||
printf("删除成功！\n");
|
||||
break;
|
||||
case 3://更改课程
|
||||
printf("请输入课程号：");
|
||||
cin >> courseId;
|
||||
course = getCourseById(connection, courseId);
|
||||
if (course == NULL) {
|
||||
printf("该课程不存在！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
printf("请输入课程名：");
|
||||
cin >> courseName;
|
||||
updateCourseName(connection, courseId, courseName);
|
||||
@ -361,6 +511,7 @@ void courseMenu(_ConnectionPtr connection) {
|
||||
printf("不存在课程记录！\n");
|
||||
break;
|
||||
}
|
||||
|
||||
size = v->size();
|
||||
cout << "课程号\t" << "课程名\n";
|
||||
for (size_t i = 0; i < size; i++) {
|
||||
@ -455,6 +606,7 @@ void insertStudent(_ConnectionPtr connection) {
|
||||
printf("该学生已存在！\n");
|
||||
return;
|
||||
}
|
||||
|
||||
stu->setId(str);
|
||||
printf("请输入姓名：");
|
||||
cin >> str;
|
||||
@ -482,6 +634,7 @@ void deleteStudent(_ConnectionPtr connection) {
|
||||
printf("该学生不存在！\n");
|
||||
return;
|
||||
}
|
||||
|
||||
deleteStudent(connection, id);
|
||||
printf("删除成功！\n");
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user