请写C语言学生信息管理系统
时间: 2023-12-27 08:04:50 浏览: 24
好的,以下是一个简单的学生信息管理系统的C语言代码示例:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_STUDENTS 50
#define MAX_NAME_LEN 20
typedef struct {
char name[MAX_NAME_LEN];
int id;
float score;
} Student;
void print_menu(void);
int add_student(Student* students, int num_students);
void display_students(Student* students, int num_students);
void search_student(Student* students, int num_students, char* name);
void delete_student(Student* students, int* num_students, char* name);
int main(void) {
Student students[MAX_STUDENTS];
int num_students = 0;
int choice;
do {
print_menu();
scanf("%d", &choice);
switch (choice) {
case 1:
num_students = add_student(students, num_students);
break;
case 2:
display_students(students, num_students);
break;
case 3: {
char name[MAX_NAME_LEN];
printf("Enter student name to search: ");
scanf("%s", name);
search_student(students, num_students, name);
break;
}
case 4: {
char name[MAX_NAME_LEN];
printf("Enter student name to delete: ");
scanf("%s", name);
delete_student(students, &num_students, name);
break;
}
case 5:
printf("Goodbye!\n");
break;
default:
printf("Invalid choice, try again.\n");
break;
}
} while (choice != 5);
return 0;
}
void print_menu(void) {
printf("\n");
printf("1. Add student\n");
printf("2. Display all students\n");
printf("3. Search student by name\n");
printf("4. Delete student by name\n");
printf("5. Quit\n");
printf("Enter your choice: ");
}
int add_student(Student* students, int num_students) {
if (num_students >= MAX_STUDENTS) {
printf("Cannot add more students, maximum limit reached.\n");
return num_students;
}
printf("Enter student name: ");
scanf("%s", students[num_students].name);
printf("Enter student ID: ");
scanf("%d", &students[num_students].id);
printf("Enter student score: ");
scanf("%f", &students[num_students].score);
printf("Student added successfully.\n");
return num_students + 1;
}
void display_students(Student* students, int num_students) {
if (num_students == 0) {
printf("No students to display.\n");
return;
}
printf("%-20s %-10s %-10s\n", "Name", "ID", "Score");
printf("----------------------------------------\n");
for (int i = 0; i < num_students; i++) {
printf("%-20s %-10d %-10.2f\n", students[i].name, students[i].id, students[i].score);
}
}
void search_student(Student* students, int num_students, char* name) {
if (num_students == 0) {
printf("No students to search.\n");
return;
}
for (int i = 0; i < num_students; i++) {
if (strcmp(students[i].name, name) == 0) {
printf("%-20s %-10d %-10.2f\n", students[i].name, students[i].id, students[i].score);
return;
}
}
printf("Student not found.\n");
}
void delete_student(Student* students, int* num_students, char* name) {
if (*num_students == 0) {
printf("No students to delete.\n");
return;
}
for (int i = 0; i < *num_students; i++) {
if (strcmp(students[i].name, name) == 0) {
for (int j = i; j < *num_students - 1; j++) {
students[j] = students[j + 1];
}
(*num_students)--;
printf("Student deleted successfully.\n");
return;
}
}
printf("Student not found.\n");
}
```
此代码实现了以下功能:
1. 添加学生信息
2. 显示所有学生信息
3. 按姓名查找学生信息
4. 按姓名删除学生信息
5. 退出程序
需要注意的是,此代码仅为示例,可能存在一些局限性和不足之处,可以根据具体需求进行修改和优化。