Serendipity/Stu_scores_system
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Update student grade management system with security improvements and bug fixes

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This commit is contained in:
LHY20
2025-09-12 23:02:10 +08:00
parent 28db1b4a01
commit f208059b70
16 changed files with 1052 additions and 594 deletions
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student_crud.c
+75 -26
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@@ -64,15 +64,18 @@ static void inputBasicInfo(Student *student)
}
// 输入年龄
student->age = safeInputInt("请输入年龄", 10, 100);
while (1)
{
student->age = safeInputInt("请输入年龄", 10, 100);
if (isValidAge(student->age))
break;
printError("年龄输入无效！年龄必须在合理范围内。");
}
// 输入性别
while (1)
{
printf("请输入性别 (M/F): ");
char gender;
scanf(" %c", &gender);
clearInputBuffer();
char gender = safeInputChar("请输入性别 (M/F)");
if (isValidGender(gender))
{
@@ -97,21 +100,34 @@ static void inputCourseInfo(Student *student)
{
printf("\n第 %d 门课程：\n", student->courseCount + 1);
safeInputString("课程名称",
student->courses[student->courseCount],
MAX_COURSE_NAME_LENGTH);
// 输入课程名称并验证
while (1)
{
safeInputString("课程名称",
student->courses[student->courseCount],
MAX_COURSE_NAME_LENGTH);
if (isValidCourseName(student->courses[student->courseCount]))
break;
printError("课程名称格式无效！课程名称不能为空。");
}
student->scores[student->courseCount] =
safeInputFloat("课程分数", MIN_SCORE, MAX_SCORE);
// 输入课程分数并验证
while (1)
{
student->scores[student->courseCount] =
safeInputFloat("课程分数", MIN_SCORE, MAX_SCORE);
if (isValidScore(student->scores[student->courseCount]))
break;
printError("成绩输入无效！成绩必须在0-100分之间。");
}
student->courseCount++;
if (student->courseCount < MAX_COURSES)
{
printf("\n是否继续添加课程？(y/n): ");
char choice;
scanf(" %c", &choice);
clearInputBuffer();
char choice = safeInputChar("\n是否继续添加课程？(y/n)");
if (choice != 'y' && choice != 'Y')
{
@@ -229,10 +245,7 @@ void deleteStudent()
printf("学号: %s\n", students[i].studentID);
printf("姓名: %s\n", students[i].name);
printf("\n确认删除？(y/n): ");
char choice;
scanf(" %c", &choice);
clearInputBuffer();
char choice = safeInputChar("\n确认删除？(y/n)");
if (choice == 'y' || choice == 'Y')
{
@@ -288,10 +301,7 @@ static void modifyStudentGender(Student *student)
{
while (1)
{
printf("请输入新性别 (M/F): ");
char gender;
scanf(" %c", &gender);
clearInputBuffer();
char gender = safeInputChar("请输入新性别 (M/F)");
if (isValidGender(gender))
{
@@ -316,7 +326,22 @@ static void modifyExistingCourse(Student *student)
}
int courseIndex = safeInputInt("请选择要修改的课程", 1, student->courseCount) - 1;
student->scores[courseIndex] = safeInputFloat("新成绩", MIN_SCORE, MAX_SCORE);
// 验证索引有效性
if (!isValidIndex(courseIndex, student->courseCount))
{
printError("课程索引无效！");
return;
}
// 输入新成绩并验证
while (1)
{
student->scores[courseIndex] = safeInputFloat("新成绩", MIN_SCORE, MAX_SCORE);
if (isValidScore(student->scores[courseIndex]))
break;
printError("成绩输入无效！成绩必须在0-100分之间。");
}
}
/**
@@ -332,8 +357,24 @@ static void addNewCourse(Student *student)
return;
}
safeInputString("课程名称", student->courses[student->courseCount], MAX_COURSE_NAME_LENGTH);
student->scores[student->courseCount] = safeInputFloat("课程成绩", MIN_SCORE, MAX_SCORE);
// 输入课程名称并验证
while (1)
{
safeInputString("课程名称", student->courses[student->courseCount], MAX_COURSE_NAME_LENGTH);
if (isValidCourseName(student->courses[student->courseCount]))
break;
printError("课程名称格式无效！课程名称不能为空。");
}
// 输入课程成绩并验证
while (1)
{
student->scores[student->courseCount] = safeInputFloat("课程成绩", MIN_SCORE, MAX_SCORE);
if (isValidScore(student->scores[student->courseCount]))
break;
printError("成绩输入无效！成绩必须在0-100分之间。");
}
student->courseCount++;
}
@@ -352,10 +393,18 @@ static void deleteCourse(Student *student)
int courseIndex = safeInputInt("请选择要删除的课程", 1, student->courseCount) - 1;
// 验证索引有效性
if (!isValidIndex(courseIndex, student->courseCount))
{
printError("课程索引无效！");
return;
}
// 移动数组元素
for (int k = courseIndex; k < student->courseCount - 1; k++)
{
strcpy(student->courses[k], student->courses[k + 1]);
strncpy(student->courses[k], student->courses[k + 1], MAX_COURSE_NAME_LENGTH - 1);
student->courses[k][MAX_COURSE_NAME_LENGTH - 1] = '\0';
student->scores[k] = student->scores[k + 1];
}
student->courseCount--;