学生管理系统小感悟

 

#include <stdio.h>

#include <windows.h>

#include <malloc.h>

#include <conio.h>

FILE *sco;

FILE *bsc;

void print_(){                      //修饰

for( int i=0; i<110; i++ )
{

printf("*");

Sleep(10);                   //间隔输出
}

printf("\n");

}

void home_page()                //主界面
{

system ( "color 5b" );                      //背景颜色

print_(); //调用修饰函数

printf("%48c 学生管理系统\n",' ');     //%45c ,' '输入空格

printf("%45c 1 查找\n",' ');

printf("%45c 2 添加\n",' ');

printf("%45c 3 删除\n",' ');

printf("%45c 4 修改\n",' ');

printf("%45c 5 浏览成绩\n",' ');

printf("%45c 6 浏览信息\n",' ');

printf("%45c 7 保存\n",' ');

printf("%45c 8 文件读取\n",' ');

printf("%45c 9 退出\n",' ');

print_();

printf("请选择:");
}

typedef char Str[100];

typedef struct Student_message                  //学生信息结构体
{
Str Name;
//char Name[20];                           //姓名
Str Number;
//char Number[8];                          //学号
Str Phone;
//char Phone[12];                          //电话
Str Scholarship;
//char Scholarship[7];                  //奖学金状况
struct Student_message *Next;

}Student_message,*_message;

 

typedef struct Student_score                //学生成绩结构体
{
Str name;                              //姓名

Str Adv;
//char Adv[4];           //高数
Str Lin;
//char Lin[4];           //线代
Str Eng;
//char Eng[4];          //大英
Str Pro;
//char Pro[4];              //程序
struct Student_score *Next;

}Student_score,*_score;

// struct Student_score *Sco=0;

char *Filename1="学生信息.txt";

char *Filename2="学生成绩.txt";

_message Read_file1(char *filename1)
{

_message stu_temp;

_message stu_head = NULL;

bsc=fopen(filename1,"r");

if(!bsc)
{
printf("%s文件不存在!!!\n",filename1);

return stu_head;

}

while(!feof(bsc))
{
stu_temp = (_message)calloc(1,sizeof(Student_message));

fscanf(bsc,"%s %s %s %s\n",stu_temp->Name,stu_temp->Number,stu_temp->Phone,stu_temp->Scholarship);

stu_temp->Next=stu_head;

stu_head = stu_temp;
}

fclose(bsc);                    //关闭文件

printf("读取完毕\n");

return stu_head;

}

_score Read_file2(char *filename2)
{

_score stu_temp;

_score stu_head = NULL;

sco=fopen(filename2,"r");

if(!sco)
{
printf("%s文件不存在!!!\n",filename2);

return stu_head;

}

while(!feof(sco))
{
stu_temp = (_score)calloc(1,sizeof(Student_score));

fscanf(sco,"%s %s %s %s %s\n",stu_temp->name,stu_temp->Adv,stu_temp->Eng,stu_temp->Lin,stu_temp->Pro);

stu_temp->Next=stu_head;

stu_head = stu_temp;
}

fclose(sco);          //关闭文件

printf("读取完毕\n");

return stu_head;

}

 

void Save_file1(char *filename1, _message mes_head)            //保存信息至文件
{
_message stu_cur = mes_head;

if(!mes_head)
{
return;
}

if(!(bsc = fopen(filename1,"w")))
{
bsc = fopen(filename1,"a+");
}

while(stu_cur)
{
fprintf(bsc,"%s %s %s %s\n",stu_cur->Name,stu_cur->Number,stu_cur->Phone,stu_cur->Scholarship);

stu_cur = stu_cur->Next;
}

fclose(bsc);

printf("保存完毕\n");
}

void Save_file2(char *filename2, _score sco_head)                   //保存信息至文件
{
_score stu_cur = sco_head;

if(!sco_head)
{
return;
}

if(!(sco = fopen(filename2,"w")))
{
sco = fopen(filename2,"a+");
}

while(stu_cur)
{
fprintf(sco,"%s %s %s %s %s\n",stu_cur->name,stu_cur->Adv,stu_cur->Eng,stu_cur->Lin,stu_cur->Pro);

stu_cur = stu_cur->Next;
}

fclose(sco);

printf("保存完毕\n");
}

 

void Search_message(_message mes_head)                        //查找学生信息
{
_message stu_cur = mes_head;

Str msg;

if(!mes_head)
{
printf("\n当前无任何信息记录!!!\n");

return;
}

printf("\n输入要查找学生姓名: "),scanf("%s",msg);

while(stu_cur)
{

if(!strcmp(stu_cur->Name,msg))

{
printf("姓名: %s\n",stu_cur->Name);

printf("学号: %s\n",stu_cur->Number);

printf("电话: %s\n",stu_cur->Phone);

printf("奖学金信息: %s\n",stu_cur->Scholarship);

return;
}

stu_cur = stu_cur->Next;
}

printf("输入的信息不存在!!!\n");

}

void Search_score(_score sco_head)                                         //查找学生信息
{
_score stu_cur = sco_head;

Str sco;

if(!sco_head)
{
printf("\n当前无任何信息记录!!!\n");

return;
}

printf("\n输入要查找学生姓名: "),scanf("%s",sco);

while(stu_cur)
{

if(!strcmp(stu_cur->name,sco))

{
printf("姓名: %s\n",stu_cur->name);

printf("高数: %s\n",stu_cur->Adv);

printf("大英: %s\n",stu_cur->Eng);

printf("线代: %s\n",stu_cur->Lin);

printf("程序: %s\n",stu_cur->Pro);

return;
}

stu_cur = stu_cur->Next;
}

printf("输入的信息不存在!!!\n");

}

_message Add_message(_message mes_head)            //添加学生信息
{
_message stu_temp = (_message)calloc(1,sizeof(Student_message));

printf("\n姓名: "),scanf("%s",stu_temp->Name);

printf("学号: "),scanf("%s",stu_temp->Number);

printf("电话: "),scanf("%s",stu_temp->Phone);

printf("奖学金信息(若无请输入\"无\"): "),scanf("%s",stu_temp->Scholarship);

stu_temp->Next = mes_head;

return stu_temp;
}

_score Add_score(_score sco_head)                            //添加学生信息
{
_score stu_temp = (_score)calloc(1,sizeof(Student_score));

printf("\n姓名: "),scanf("%s",stu_temp->name);

printf("高数: "),scanf("%s",stu_temp->Adv);

printf("大英: "),scanf("%s",stu_temp->Eng);

printf("线代: "),scanf("%s",stu_temp->Lin);

printf("程序: "),scanf("%s",stu_temp->Pro);

stu_temp->Next = sco_head;

return stu_temp;
}

_message Delete_message(_message mes_head)                //删除学生信息
{
_message stu_temp,stu_cur = mes_head;

Str msg;

if(!mes_head)
{

printf("\n当前无任何信息记录!!!\n");

return mes_head;
}

printf("\n请输入要删除的学生姓名: "),scanf("%s",msg);

if(!strcmp(mes_head->Name,msg))
{
stu_temp = mes_head;

mes_head = stu_temp->Next;

free(stu_temp);

printf("删除成功!!!\n");

return mes_head;
}
while(stu_cur->Next)
{
if(!strcmp(stu_cur->Next->Name,msg))
{
stu_temp = stu_cur->Next;

stu_cur->Next = stu_temp->Next;

free(stu_temp);

printf("删除成功!!!\n");

return mes_head;
}

stu_cur = stu_cur->Next;
}

printf("输入的信息不存在!!!\n");

return mes_head;
}

_score Delete_score(_score sco_head)                                          //删除学生信息
{
_score stu_temp,stu_cur = sco_head;

Str sco;

if(!sco_head)
{

printf("\n当前无任何信息记录!!!\n");

return sco_head;
}

printf("\n请输入要删除的学生姓名: "),scanf("%s",sco);

if(!strcmp(sco_head->name,sco))
{
stu_temp = sco_head;

sco_head = stu_temp->Next;

free(stu_temp);

printf("删除成功!!!\n");

return sco_head;
}
while(stu_cur->Next)
{
if(!strcmp(stu_cur->Next->name,sco))
{
stu_temp = stu_cur->Next;

stu_cur->Next = stu_temp->Next;

free(stu_temp);

printf("删除成功!!!\n");

return sco_head;
}

stu_cur = stu_cur->Next;
}

printf("输入的信息不存在!!!\n");

return sco_head;
}

void Modify_message(_message mes_head)                                      //修改学生信息
{
_message stu_cur = mes_head;

Str msg;

if(!mes_head)
{

printf("\n当前无任何信息记录!!!\n");

return;
}

printf("\n请输入要修改的学生姓名: "),scanf("%s",msg);

while(stu_cur)
{
if(!strcmp(stu_cur->Name,msg))
{
printf("请输入信息替换:\n\n");

printf("\n姓名: "),scanf("%s",stu_cur->Name);

printf("学号: "),scanf("%s",stu_cur->Number);

printf("电话: "),scanf("%s",stu_cur->Phone);

printf("奖学金信息(若无请输入\"无\"): "),scanf("%s",stu_cur->Scholarship);

return;
}

stu_cur = stu_cur->Next;
}

printf("输入的信息不存在!!!\n");

return;
}

void Modify_score(_score sco_head)          //修改学生信息
{
_score stu_cur = sco_head;

Str sco;

if(!sco_head)
{

printf("\n当前无任何信息记录!!!\n");

return;
}

printf("\n请输入要修改的学生姓名: "),scanf("%s",sco);

while(stu_cur)
{
if(!strcmp(stu_cur->name,sco))
{
printf("请输入信息替换:\n\n");

printf("\n姓名: "),scanf("%s",stu_cur->name);

printf("高数: "),scanf("%s",stu_cur->Adv);

printf("大英: "),scanf("%s",stu_cur->Eng);

printf("线代: "),scanf("%s",stu_cur->Lin);

printf("程序: "),scanf("%s",stu_cur->Pro);

return;
}

stu_cur = stu_cur->Next;
}

printf("输入的信息不存在!!!\n");

return;
}

void Display_message(_message mes_head)         //显示学生信息
{
_message mes_cur = mes_head;

if(!mes_head)
{

printf("\n当前无任何信息记录!!!\n");

return;
}
while(mes_cur)
{

printf("\n姓名: %s\n",mes_cur->Name);

printf("学号: %s\n",mes_cur->Number);

printf("电话: %s\n",mes_cur->Phone);

printf("奖学金信息: %s\n",mes_cur->Scholarship);

mes_cur = mes_cur->Next;
}
}

void Display_score(_score sco_head)        //显示学生信息
{
_score sco_cur = sco_head;

if(!sco_head)
{

printf("\n当前无任何信息记录!!!\n");

return;
}
while(sco_cur)
{

printf("\n姓名: %s\n",sco_cur->name);

printf("高数: %s\n",sco_cur->Adv);

printf("大英: %s\n",sco_cur->Eng);

printf("线代: %s\n",sco_cur->Lin);

printf("程序: %s\n",sco_cur->Pro);

sco_cur = sco_cur->Next;
}
}

int main( int argc, char const *argv[] )
{

char choice;

_message mes_head = NULL;

_score sco_head = NULL;

while(1)
{

home_page(); //进入主页面

choice = getch();

system("cls");

switch(choice) //进行选择
{
case '1': Search_message(mes_head);

Search_score(sco_head);

break;

case '2': mes_head = Add_message(mes_head);

sco_head = Add_score(sco_head);

break;

case '3': mes_head = Delete_message(mes_head);

sco_head = Delete_score(sco_head);

break;

case '4': Modify_message(mes_head);

Modify_score(sco_head);

break;

case '5': Display_score(sco_head);

break;

case '6': Display_message(mes_head);

break;

case '7': Save_file1(Filename1,mes_head);

Save_file2(Filename2,sco_head);

break;

case '8': mes_head = Read_file1(Filename1);

sco_head = Read_file2(Filename2);

break;

case '9': exit(0);

break;

default: break;

}

}


return 0;

}
/*
#include <stdio.h>

#include <windows.h>

int main ( int argc, char const *argv[] )
{

 

char a1[7]="hello ",a2[7]="world!";

char *p1=&a1[0], *p2=&a2[0];

for(int i=0 ; i<7 ; i++)
{

printf( "%c",*p1++ );

Sleep(100);

}

for( i=0 ; i<7 ; i++)
{

printf( "%c",*p2++ );

Sleep(100);
}

printf( "\n" );

return 0;

}
*/

 

读完这个项目，功能已标注，我认为还能够优化一下几点

1：可增长更多学生信息项目

2：可更改查找功能的查找方式 仅须要查询一次便可显示所有信息

3：查询成绩功能稍显多余

4：优化界面