C语言学生信息管理系统小项目

本文为大家分享了C语言学生信息管理系统小项目，供大家参考，具体内容如下

#include 
#include 
#include 
#include 

struct student_info {
 int s_no;
 char name[20];
 int age;
 char sex[10];
 int birth;
 char addr[30];
 char tele[30];
 char email[30];
 struct student_info *next;
};

void menue(void);
int info_input(void);
int info_review(void);
int info_search(void);

int main(void)
{
 menue();

 return 0;
}

void menue(void)
{
 int choose;

 system("clear");

 printf("-------------学生信息管理系统---------------n");
 printf("tt1. 学生信息录入n");
 printf("tt2. 学生信息浏览n");
 printf("tt3. 学生信息查询n");
 printf("tt4. 学生信息的删除与修改n");
 printf("tt0. 退出系统n");
 printf("--------------------------------------------n");

 printf("请输入您的选择(0~~4): ");
 scanf("%d", &choose);

 switch (choose) {
 case 0:
  exit(0);
  break;
 case 1:
  info_input();
  break;
 case 2:
  info_review();
  break;
 case 3:
  info_search();
  break;
 }

 while (choose > 4 || choose < 1) {
 printf("您输入了一个无效的选择，请重新输入(0-4): ");
 scanf("%d", &choose);
 }

}



int creat_list(void)
{
 return 0;
}

// 1. 学生信息录入
int info_input(void)
{
 struct student_info *head = NULL, *rear = NULL;
 FILE *fp;
 int flag = 1;

 head = (struct student_info *)malloc(sizeof(struct student_info));
 rear = head;

 while (flag) {
 struct student_info *stu = NULL;

 stu = (struct student_info *)malloc(sizeof(struct student_info));

 // FILE *fopen(const char *path, const char *mode);
 fp = fopen("stuinfo.txt", "a+b");
 fseek(fp, sizeof(struct student_info), 2);


 system("clear");
 printf("-----请依次输入学生的信息-----n");



 printf("学号: ");
 scanf("%d", &stu->s_no);

 printf("姓名: ");
 scanf("%s", stu->name);

 printf("年龄: ");
 scanf("%d", &stu->age);

 printf("性别: ");
 scanf("%s", stu->sex);

 printf("出生年月: ");
 scanf("%d", &stu->birth);

 printf("地址: ");
 scanf("%s", stu->addr);

 printf("电话: ");
 scanf("%s", stu->tele);

 printf("E-mail: ");
 scanf("%s", stu->email);

 fwrite(stu, sizeof(struct student_info), 1, fp);

 rear->next = stu;
 rear = stu;

 fclose(fp);

 printf("继续输入请按1，返回上一级菜单请按2，退出请按0: ");
 scanf("%d", &flag);

 if (flag == 0) {
  exit(0);
 }

 if (flag == 1) {
  continue;
 }

 if (flag == 2) {
  menue();
  break;
 }
 }

 rear->next = NULL;

 return 0;
}

// 2. 学生信息浏览
// size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream);
int info_review(void)
{
 struct student_info stu;

 int ret = 1;
 int flag = 0;

 FILE *fp = fopen("stuinfo.txt", "rb");
 //int fd = open("stuinfo.txt", O_RDONLY);


 if (fp == NULL) {
 perror("fopen");
 exit(0);
 }

 while (ret != 0) { 
 
 ret = fread(&stu, sizeof(struct student_info), 1, fp);
 //read(fd, stdout, sizeof(struct student_info));

 printf("------------------------------------------------------------------------------------------------------n");
 printf("%dt%st%dt%st%dt%st%st%sn", stu.s_no, stu.name, stu.age, stu.sex, stu.birth, stu.addr, stu.tele, stu.email);
 }

 fclose(fp);
 printf("=====================^-^===================== ====================^-^==================n");

 printf("退出请按0, 返回上一级菜单请按1: ");
 scanf("%d", &flag);

 if (flag == 0) {
 exit(0);
 }

 if (flag == 1) {
 menue();
 exit(0);
 }

 return 0;
}

// 学生信息查询

int info_search(void) 
{
 system("clear");

 struct student_info *stu1 = NULL, *stu2 = NULL;
 stu1 = (struct student_info *)malloc(sizeof(struct student_info));
 stu2 = (struct student_info *)malloc(sizeof(struct student_info));

 int ret = 1, i = 0, flag = 1;

 FILE *fp = fopen("stuinfo.txt", "rb");

 printf("=====按姓名查询请输入1, 按学号查询请输入2=====n");
 scanf("%d", &i);

 while (flag) {
 if (i == 1) {
  printf("请输入学生的姓名: ");
  scanf("%s", stu1->name);

  do {
  if (ret == 0) {
   printf("没有这个人哦^*^n");
   exit(0);
  }
  ret = fread(stu2, sizeof(struct student_info), 1, fp);
  } while (strcmp(stu1->name, stu2->name));

  printf("您要找的人信息如下: n");
  printf("%dt%st%dt%st%dt%st%st%sn", stu2->s_no, stu2->name, stu2->age, stu2->sex, stu2->birth, stu2->addr, stu2->tele, stu2->email);
 }

 if (i == 2) {
  printf("请输入学生的学号: ");
  scanf("%d", stu1->s_no);

  do {
  if (ret == 0) {
   printf("没有这个人哦^*^n");
   exit(0);
  }
  ret = fread(stu2, sizeof(struct student_info), 1, fp);
  } while (stu2->s_no != stu1->s_no);

  printf("您要找的人信息如下: n");
  printf("%dt%st%dt%st%dt%st%st%sn", stu2->s_no, stu2->name, stu2->age, stu2->sex, stu2->birth, stu2->addr, stu2->tele, stu2->email);
 }

 printf("=====继续查询请按1，返回上一级菜单请按2=====n");
 scanf("%d", &flag);

 if (flag == 1)
  continue;
 if (flag == 2) {
  menue();
  break;
 }
 }
 return 0;

}

// 学生信息删除

int info_delete(void)
{

}

// 学生信息修改
int info_alter(void)
{

}

还有部分功能未完成，下次再写吧（写的有点烦-_-）
程序截图：

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