c语言课程设计-学生信息管理系统.doc

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1、#include #include #include #include #define NULL 0#define LEN sizeof(struct student)struct student char name20; long int num; char sex4; int age; char address30; double tele_num; char aihao20; struct student *next;/定义一个结构题int TOTAL_NUM = 0;/学生总数struct student *head = NULL;void welcome (); /欢迎界面void

2、mainmenu (); /主界面void record (); /记录数据void insert(struct student *stu); /插入数据void display(struct student *stu); /显示一个学生的信息void displayAll (); /显示所有学生的信息void query_by_num (); /按学号查询学生信息void readData (); /读取文件里学生的信息void writeData (); /向文件写入学生信息void freeAll (); /清空链表内容void del (); /删除学生信息void change ()

3、; /更改学生信息void devise (struct student *p); /选择更改内容int main (void) welcome (); /显示主菜单 mainmenu (); return 0;/显示欢迎信息void welcome () printf (+-+n); printf (| |n); printf (| 欢迎使用网络工程学院信息安全092班学生信息管理系统 |n); printf (| |n); printf (+-+n);/系统主菜单void mainmenu () int choice; choice = -1; readData (); printf (n

4、温馨提示：为保证您的操作得到保存，请按正常顺序退出系统_n); do printf (nnn); printf (ttt-n); printf (ttt+ 信息安全092班学生信息管理系统 |n); printf (ttt-n); printf (ttt+ 1-录入学生信息 |n); printf (ttt+ 2-浏览学生信息 |n); printf (ttt+ 3-查询学生信息 |n); printf (ttt+ 4-删除学生信息 |n); printf (ttt+ 5-修改学生信息 |n); printf (ttt+ 0-退出系统 |n); printf (ttt+*|n); printf

5、 (ttt-n); printf (请输入您的选择：); scanf (%d, &choice); switch (choice) case 0: writeData (); freeAll (); exit (0); case 1: record (); break; case 2: displayAll (); break; case 3: query_by_num (); break; case 4: del (); break; case 5: change (); break; default: printf (n无效选项!); break; while (choice != 0);

6、/录入学生信息void record () struct student *p0; p0 = (struct student *)malloc(LEN); printf (请输入学生的姓名:); scanf (%s,p0-name); printf (请输入学生的学号:); scanf (%ld,&p0-num); printf (请输入学生的性别:); scanf (%s,p0-sex); printf (请输入学生的年龄:); scanf (%d,&p0-age); printf (请输入学生的地址:); scanf (%s,p0-address); printf (请输入学生的电话:);

7、 scanf (%lf,&p0-tele_num); printf (请输入学生的爱好:); scanf (%s,p0-aihao); insert (p0); printf (该学生的信息为:n); printf (-n); printf (姓名t学号tt年龄t性别t地址tt电话tt爱好n); display (p0);void insert (struct student *stu) struct student *p0, *p1, *p2; p1 = head; p0 = stu; if (head = NULL) head = p0; p0-next = NULL; else whil

8、e (p0-num p1-num)&(p1-next != NULL) p2 = p1; p1 = p1-next; if (p0-num num) if (head = p1) head = p0; else p2-next = p0; p0-next = p1; else p1-next = p0; p0-next = NULL; TOTAL_NUM+;void display (struct student *p) printf (%st%ldt%dt%st%stt%.0ft%sn, p-name, p-num, p-age, p-sex, p-address, p-tele_num,

9、p-aihao);/浏览学生信息void displayAll() struct student *p; printf(学生总数:%dn, TOTAL_NUM); p = head; if (head != NULL) printf(n姓名t学号tt年龄t性别t地址tt电话tt爱好n); printf(-n); do display(p); p = p-next; while(p != NULL); printf (n);/按学号查询学生信息void query_by_num () int num; struct student *p1; printf(请输入学生的学号：); scanf(%l

10、d, &num); if(head=NULL) printf(无学生记录！n); return; p1 = head; while (num!=p1-num & p1-next!=NULL) p1 = p1-next; if (num = p1-num) printf (姓名t学号tt年龄t性别t地址tt电话tt爱好n); printf (-n); display (p1); else printf (没有该学生记录，请核对！);/写入文件void writeData () FILE* fp;/文件指针 struct student *p; fp = fopen(1.txt, w); if (

11、!fp) printf(文件打开错误！); return; fprintf(fp,%dn, TOTAL_NUM); for(p = head; p!= NULL; p= p-next) fprintf(fp,%st%ldt%st%dt%st%.0ft%sn, p-name, p-num, p-sex, p-age, p-address, p-tele_num, p-aihao); fclose (fp);void freeAll () struct student *p1, *p2; p1 = p2=head; while(p1) p2=p1-next; free (p1); p1 = p2;

12、 /读取文件void readData () FILE* fp;/文件指针 struct student *p1, *p2; fp = fopen(1.txt, r); if (!fp) printf(文件打开错误！); return; fscanf(fp,%dn, &TOTAL_NUM); head = p1 = p2 = (struct student *)malloc(LEN); fscanf(fp,%st%ldt%st%dt%st%lft%sn, p1-name, &p1-num, p1-sex, &p1-age, p1-address, &p1-tele_num, p1-aihao)

13、; while(!feof(fp) p1 = (struct student *)malloc(LEN); fscanf(fp,%st%ldt%st%dt%st%lft%sn, p1-name, &p1-num, p1-sex, &p1-age, p1-address, &p1-tele_num, p1-aihao); p2-next = p1; p2 = p1; p2-next = NULL; fclose(fp);/删除学生信息void del () struct student *p1, *p2; long int num; if (head = NULL) printf(无学生记录！n

14、); return; printf(请输入您要删除的学生的学号：); scanf(%ld, &num); p1 = head; while (num != p1-num & p1-next != NULL) p2 = p1; p1 = p1-next; if(num = p1-num) if(p1 = head) head = p1-next; else p2-next = p1-next; free(p1); TOTAL_NUM-; else printf(没有该学生记录，请核对！n);/修改学生信息void change () struct student *p1, *p2; long i

15、nt num; if (head = NULL) printf (无学生记录！n); return; printf (请输入您要修改的学生的学号：); scanf (%ld, &num); p1 = head; while (num != p1-num & p1-next != NULL) p2 = p1; p1 = p1-next; if(num = p1-num) devise (p1); else printf(没有该学生记录，请核对！n);void devise (struct student *p) int choice; choice = -1; do printf(请选择您要修改

16、的学生的信息内容：n); printf(+-+n); printf(| 姓名 请按 1 |n); printf(| 学号 请按 2 |n); printf(| 性别 请按 3 |n); printf(| 年龄 请按 4 |n); printf(| 地址 请按 5 |n); printf(| 电话 请按 6 |n); printf(| 爱好 请按 7 |n); printf(| 取消 请按 0 |n); printf(+-+n); printf(请输入您的选择：); scanf(%d, &choice); switch (choice) case 0: return; case 1: print

17、f(请输入新姓名：); scanf(%s, p-name); break; case 2: printf(请输入新学号：); scanf(%d, &p-num); break; case 3: printf(请输入新性别：); scanf(%s, p-sex); break; case 4: printf(请输入新年龄：); scanf(%s, &p-age); break; case 5: printf(请输入新地址：); scanf(%s, p-address); break; case 6: printf(请输入新电话：); scanf(%lf, &p-tele_num); break; case 7: printf(请输入新爱好：); scanf(%s, p-aihao); break; default: printf(n无效选项!); break; while(choice != 0);