求助~学生管理系统
求助啊 ~~~ 还有两个问题....恳请斧正！！！！！！！！！！！！
第一 数据输出时 最后一个数据输出两次
第二 修改记录的 那块 有问题
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <process.h>
struct person
{
char name[15];
char st_num[15];
char sex[5];
char born_ym[15];
char major[15];
char class_num[15];
char address[20];
char hostelnum[15];
};
FILE *fp;
void creat();//创建一个文件用来存放数据
void output();/*输出数据*/
void _1search();//查找某一特定学生
void _2search();
void modify();
void append();//添加一个学生
void main()
{
char code_source[20]="nokia";
char code[20];
printf("\n\n\n\n");
printf("\t\t\t学生管理系统Loading...\n\n\n\n\n\n");
printf("\t\t\t 输入密码进入：");
scanf("%s",code);
if(!strcmp("code",code_source))
{
int m;
creat();
while(1)
{
printf("\n\n\n");
printf("\t\t~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
printf("\n\n\n\n");
printf(" \t\t\t|-----------------------------|\n");
printf("\n\t\t\t\\\t数据添加, 请按1 \/");
printf("\n\t\t\t\\\t姓名查找，请按2 \/");
printf("\n\t\t\t\\\t学号查找，请按3 \/");
printf("\n\t\t\t\\\t数据修改，请按4 \/");
printf("\n\t\t\t\\\t数据输出，请按5 \/");
printf("\n\t\t\t\\\t程序退出，请按0 \/\n");
printf(" \t\t\t|-----------------------------|\n");
scanf("%d",&m);
if(m>=0&&m<=5)
{
switch(m)
{
case 1: append();
break;
case 2: _1search();
break;
case 3: _2search();
break;
case 4: modify();
break;
case 5: output();
break;
case 0: exit(0);
}
printf("\n\n操作完毕，请再次选择！");
}
else
printf("\n\n选择错误，请再次选择！");
}
}
}
void creat()
{
if((fp=fopen("student.txt","a"))==NULL)
{
printf("\n不能建立学生信息管理系统！");
exit(0);
}
printf(" |****************************************************************************|\n");
printf("\t\t\t\t学生管理系统\n\n\n\n\t\t\t欢迎使用，请您选择操作 O(∩_∩)O~\n");
printf(" |****************************************************************************|\n");
fclose(fp);
}
void output()
{
struct person one;
if((fp=fopen("student.txt","r"))==NULL)
{
printf("\n未打开学生信息管理系统！");
exit(0);
}
printf("\n\n%20s\n","学生信息管理系统");
printf("\n");
printf("\n");
printf("\n\n姓名 学号 性别 出生年月 专业 班级 家庭地址 宿舍电话\n");
while(!feof(fp))
{
fscanf(fp,"%s%s%s%s%s%s%s%s",one.name,one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
printf("%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s\n",one.name,one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
}
fclose(fp);
}
void append()
{
struct person one;
if((fp=fopen("student.txt","a"))==NULL)
{
printf("\n不能建立学生信息管理系统！");
exit(0);
}
printf("\n请输入姓名、学号、性别、出生年月、专业、班级、家庭地址、宿舍电话（以0结束）\n");
scanf("%s",one.name);
while(strcmp(one.name,"0"))
{
scanf("%s%s%s%s%s%s%s",one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
fprintf(fp,"%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s\n",one.name,one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
scanf("%s",one.name);
}
fclose(fp);
system("cls");
}
void _1search()
{
int k=0;
char namekey[15];
struct person one;
printf("\n请输入姓名:");
scanf("%s",namekey);
if((fp=fopen("student.txt","rb"))==NULL)
{
printf("\n不能建立学生信息管理系统");
exit(0);
}
rewind(fp);
while(!feof(fp))
{
fscanf(fp,"%s%s%s%s%s%s%s%s",one.name,one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
if(!strcmp(namekey,one.name))
{
printf("\n\n已查到，记录为：");
printf("\n\n姓名 学号 性别 出生年月 专业 班级 家庭地址 宿舍电话\n");
printf("%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s\n",one.name,one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
k=1;// 查找到得标志量
}
}
if(!k)
printf("\n\n对不起，管理系统中没有此人的记录。");
fclose(fp);
}
/*定义按学号查询学生学籍管理系统的函数*/
void _2search()
{
int k=0;
char numkey[15];
struct person one;
printf("\n请输入学号:");
scanf("%s",numkey);
if((fp=fopen("student.txt","rb"))==NULL)
{
printf("\n不能建立学生信息管理系统");
exit(0);
}
rewind(fp);
while(!feof(fp))
{
fscanf(fp,"%s%s%s%s%s%s%s%s",one.name,one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
if(!strcmp(numkey,one.st_num))
{
printf("\n\n已查到，记录为：");
printf("\n\n姓名 学号 性别 出生年月 专业 班级 家庭地址 宿舍电话\n");
printf("%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10s\n",one.name,one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
k=1;// 查找到得标志量
}
}
if(!k)
printf("\n\n对不起，管理系统中没有此人的记录。");
fclose(fp);
}
void modify()
{
int k=0;
int m=0;
long offset;
char numkey[15];
struct person one ;
printf("\n请输入要修改学生的学号：");
scanf("%s",numkey);
if((fp=fopen("student.txt","r+"))==NULL)
{
printf("\n不能建立学生信息管理系统");
exit(0);
}
rewind(fp);
while(!feof(fp))
{ offset=ftell(fp);
fscanf(fp,"%s%s%s%s%s%s%s%s",one.name,one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
if(!strcmp(numkey,one.st_num))
{
printf("\n\n已查到，记录为：");
printf("\n\n姓名 学号 性别 出生年月 专业 班级 家庭地址 宿舍电话\n");
printf("%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10sn",one.name,one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
k=1;
}
}
if(k)
{
aaaqqq源代码.rar
(1.91 KB)
printf("\n请输入新学生记录:\n");
scanf("%s%s%s%s%s%s%s",one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
fseek(fp,offset,SEEK_SET);
fprintf(fp,"%-10s%-10s%-10s%-10s%-10s%-10s%-10s%-10sn",one.name,one.st_num,one.sex,one.born_ym,one.major,one.class_num,one.address,one.hostelnum);
}
else
printf("\n对不起，没有记录。");
fclose(fp);
system("cls");
}
