用C语言编写一个可查询、修改、添加信息的程序，要能够存储：学号、姓名、专业、家庭住址、联系电话等信息，要能使用文本文件对学生信息进行存储、查询、添加、删除等操作

好的，以下是一个可以存储、查询、修改、添加、删除学生信息的C语言程序，同时使用文本文件进行存储操作：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// 定义学生信息结构体
typedef struct student {
    char id[10];
    char name[20];
    char major[20];
    char address[50];
    char phone[20];
    struct student *next;
} Student;

// 读取学生信息文件
Student *read_student_file() {
    FILE *fp = fopen("students.txt", "r");
    if (fp == NULL) {
        printf("文件不存在！\n");
        exit(1);
    }

    Student *head = (Student *)malloc(sizeof(Student));
    head->next = NULL;

    while (!feof(fp)) {
        Student *new_student = (Student *)malloc(sizeof(Student));
        fscanf(fp, "%s %s %s %s %s", new_student->id, new_student->name, new_student->major, new_student->address, new_student->phone);
        new_student->next = NULL;

        Student *p = head;
        while (p->next != NULL) {
            p = p->next;
        }
        p->next = new_student;
    }

    fclose(fp);
    return head;
}

// 添加学生信息
void add_student(Student *head) {
    Student *new_student = (Student *)malloc(sizeof(Student));
    printf("请输入学生学号：");
    scanf("%s", new_student->id);
    printf("请输入学生姓名：");
    scanf("%s", new_student->name);
    printf("请输入学生专业：");
    scanf("%s", new_student->major);
    printf("请输入学生家庭住址：");
    scanf("%s", new_student->address);
    printf("请输入学生联系电话：");
    scanf("%s", new_student->phone);
    new_student->next = NULL;

    Student *p = head;
    while (p->next != NULL) {
        p = p->next;
    }
    p->next = new_student;

    // 将学生信息写入文件
    FILE *fp = fopen("students.txt", "a");
    fprintf(fp, "%s %s %s %s %s\n", new_student->id, new_student->name, new_student->major, new_student->address, new_student->phone);
    fclose(fp);

    printf("添加成功！\n");
}

// 删除学生信息
void delete_student(Student *head) {
    char id[10];
    printf("请输入要删除的学生学号：");
    scanf("%s", id);

    Student *p = head->next;
    Student *pre = head;
    while (p != NULL) {
        if (strcmp(p->id, id) == 0) {
            pre->next = p->next;
            free(p);

            // 重新写入文件
            FILE *fp = fopen("students.txt", "w");
            p = head->next;
            while (p != NULL) {
                fprintf(fp, "%s %s %s %s %s\n", p->id, p->name, p->major, p->address, p->phone);
                p = p->next;
            }
            fclose(fp);

            printf("删除成功！\n");
            return;
        }
        pre = p;
        p = p->next;
    }
    printf("未找到该学生！\n");
}

// 查找学生信息
void find_student(Student *head) {
    char id[10];
    printf("请输入要查找的学生学号：");
    scanf("%s", id);

    Student *p = head->next;
    while (p != NULL) {
        if (strcmp(p->id, id) == 0) {
            printf("学号：%s\t姓名：%s\t专业：%s\t家庭住址：%s\t联系电话：%s\n", p->id, p->name, p->major, p->address, p->phone);
            return;
        }
        p = p->next;
    }
    printf("未找到该学生！\n");
}

// 修改学生信息
void modify_student(Student *head) {
    char id[10];
    printf("请输入要修改的学生学号：");
    scanf("%s", id);

    Student *p = head->next;
    while (p != NULL) {
        if (strcmp(p->id, id) == 0) {
            printf("请输入新的学生姓名：");
            scanf("%s", p->name);
            printf("请输入新的学生专业：");
            scanf("%s", p->major);
            printf("请输入新的学生家庭住址：");
            scanf("%s", p->address);
            printf("请输入新的学生联系电话：");
            scanf("%s", p->phone);

            // 重新写入文件
            FILE *fp = fopen("students.txt", "w");
            p = head->next;
            while (p != NULL) {
                fprintf(fp, "%s %s %s %s %s\n", p->id, p->name, p->major, p->address, p->phone);
                p = p->next;
            }
            fclose(fp);

            printf("修改成功！\n");
            return;
        }
        p = p->next;
    }
    printf("未找到该学生！\n");
}

// 显示所有学生信息
void show_all_student(Student *head) {
    Student *p = head->next;
    while (p != NULL) {
        printf("学号：%s\t姓名：%s\t专业：%s\t家庭住址：%s\t联系电话：%s\n", p->id, p->name, p->major, p->address, p->phone);
        p = p->next;
    }
}

int main() {
    Student *head = read_student_file();
    int choice;

    while (1) {
        printf("\n***********学生信息管理系统***********\n");
        printf("1. 添加学生信息\n");
        printf("2. 删除学生信息\n");
        printf("3. 查找学生信息\n");
        printf("4. 修改学生信息\n");
        printf("5. 显示所有学生信息\n");
        printf("6. 退出系统\n");
        printf("请选择操作：");
        scanf("%d", &choice);

        switch (choice) {
        case 1:
            add_student(head);
            break;
        case 2:
            delete_student(head);
            break;
        case 3:
            find_student(head);
            break;
        case 4:
            modify_student(head);
            break;
        case 5:
            show_all_student(head);
            break;
        case 6:
            printf("谢谢使用！\n");
            exit(0);
        default:
            printf("请输入正确的操作编号！\n");
        }
    }

    return 0;
}

该程序使用了文件操作函数，通过读取和写入文本文件来实现学生信息的存储和修改。注意，在文件操作时需要注意文件是否存在和文件打开方式等问题。

另外，为了简化代码，该程序没有对输入进行严格的检查和处理，请根据需要进行修改和完善。