下面是一个使用C语言实现的学生信息示意性检索程序的示例。这个程序包含了你所提到的六个功能模块：初始化、插入、删除、修改、查找和显示。请注意，这个程序是一个简化版本，仅用于演示链表操作，并未包含错误处理或复杂的边界检查。
```c
#include
#include
#include
// 学生信息结构体
typedef struct Student {
int id;
char sex;
int age;
char class[30];
struct Student *next;
} Student;
// 函数声明
Student* createStudent();
void insertStudent(Student **head, Student *newStudent);
void deleteStudent(Student **head, int id);
void modifyStudent(Student **head, int id);
void findStudent(Student *head, int id);
void displayStudents(Student *head);
void freeStudents(Student *head);
int main() {
int choice, numStudents, id;
Student *head = NULL;
// 循环处理用户请求
do {
printf("\n学生信息管理程序\n");
printf("1. 初始化\n");
printf("2. 插入学生\n");
printf("3. 删除学生\n");
printf("4. 修改学生信息\n");
printf("5. 查找学生信息\n");
printf("6. 显示所有学生信息\n");
printf("7. 退出\n");
printf("请选择操作：");
scanf("%d", &choice);
switch (choice) {
case 1:
printf("请输入学生人数：");
scanf("%d", &numStudents);
for (int i = 0; i < numStudents; i++) {
Student *newStudent = createStudent();
insertStudent(&head, newStudent);
}
break;
case 2:
{
Student *newStudent = createStudent();
insertStudent(&head, newStudent);
}
break;
case 3:
printf("请输入要删除学生的学号：");
scanf("%d", &id);
deleteStudent(&head, id);
break;
case 4:
printf("请输入要修改信息学生的学号：");
scanf("%d", &id);
modifyStudent(&head, id);
break;
case 5:
printf("请输入要查找学生的学号：");
scanf("%d", &id);
findStudent(head, id);
break;
case 6:
displayStudents(head);
break;
case 7:
printf("程序结束\n");
freeStudents(head);
break;
default:
printf("无效选择，请重新输入\n");
}
} while (choice != 7);
return 0;
}
Student* createStudent() {
Student *newStudent = (Student*)malloc(sizeof(Student));
if (!newStudent) {
perror("Error allocating memory for new student");
exit(EXIT_FAILURE);
}
printf("请输入学号：");
scanf("%d", &newStudent->id);
printf("请输入性别(M/F)：");
scanf(" %c", &newStudent->sex);
printf("请输入年龄：");
scanf("%d", &newStudent->age);
printf("请输入班级：");
scanf(" %s", newStudent->class);
newStudent->next = NULL;
return newStudent;
}
void insertStudent(Student **head, Student *newStudent) {
newStudent->next = *head;
*head = newStudent;
}
void deleteStudent(Student **head, int id) {
Student *current = *head;
Student *prev = NULL;
while (current != NULL && current->id != id) {
prev = current;
current = current->next;
}
if (current == NULL) {
printf("未找到学号为 %d 的学生\n", id);
} else {
if (prev == NULL) {
*head = current->next;
} else {
prev->next = current->next;
}
free(current);
printf("学生删除成功\n");
}
