请用C 编写一系统,实现学生信息管理,查询时可实现按姓名、按学号查询“
时间: 2024-03-13 13:44:51 浏览: 23
好的,我可以为您编写一个简单的学生信息管理系统,基于命令行界面,支持添加、查询和删除学生信息。以下是示例代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_NAME_LEN 20
#define MAX_ID_LEN 10
#define MAX_STUDENT_NUM 100
typedef struct {
char name[MAX_NAME_LEN];
char id[MAX_ID_LEN];
int age;
char gender;
} Student;
Student students[MAX_STUDENT_NUM];
int student_num = 0;
void add_student() {
if (student_num >= MAX_STUDENT_NUM) {
printf("Error: too many students\n");
return;
}
Student new_student;
printf("Enter student name: ");
scanf("%s", new_student.name);
printf("Enter student ID: ");
scanf("%s", new_student.id);
printf("Enter student age: ");
scanf("%d", &new_student.age);
printf("Enter student gender (M/F): ");
scanf(" %c", &new_student.gender);
students[student_num] = new_student;
student_num++;
printf("Student added successfully\n");
}
void print_student(Student s) {
printf("%s, %s, %d, %c\n", s.name, s.id, s.age, s.gender);
}
void query_student() {
int mode;
printf("Select query mode (1 for name, 2 for ID): ");
scanf("%d", &mode);
if (mode == 1) {
char name[MAX_NAME_LEN];
printf("Enter student name: ");
scanf("%s", name);
int found = 0;
for (int i = 0; i < student_num; i++) {
if (strcmp(students[i].name, name) == 0) {
print_student(students[i]);
found = 1;
}
}
if (!found) {
printf("No such student found\n");
}
} else if (mode == 2) {
char id[MAX_ID_LEN];
printf("Enter student ID: ");
scanf("%s", id);
int found = 0;
for (int i = 0; i < student_num; i++) {
if (strcmp(students[i].id, id) == 0) {
print_student(students[i]);
found = 1;
}
}
if (!found) {
printf("No such student found\n");
}
} else {
printf("Invalid query mode\n");
}
}
void delete_student() {
char id[MAX_ID_LEN];
printf("Enter student ID to delete: ");
scanf("%s", id);
int found = 0;
for (int i = 0; i < student_num; i++) {
if (strcmp(students[i].id, id) == 0) {
for (int j = i; j < student_num - 1; j++) {
students[j] = students[j + 1];
}
student_num--;
printf("Student deleted successfully\n");
found = 1;
break;
}
}
if (!found) {
printf("No such student found\n");
}
}
int main() {
int choice;
while (1) {
printf("1. Add student\n");
printf("2. Query student\n");
printf("3. Delete student\n");
printf("4. Exit\n");
printf("Enter your choice: ");
scanf("%d", &choice);
switch (choice) {
case 1:
add_student();
break;
case 2:
query_student();
break;
case 3:
delete_student();
break;
case 4:
exit(0);
default:
printf("Invalid choice\n");
}
}
return 0;
}
```
这个程序中,学生信息存储在一个结构体数组中,最多支持存储100个学生信息。添加学生信息时,用户需要输入学生姓名、学号、年龄和性别;查询学生信息时,用户可以选择按姓名或学号查询,系统会输出匹配的学生信息;删除学生信息时,用户需要输入学生的学号,系统会删除该学生的信息。