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Makefile.win
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# Project: 学生成绩管理系统
# Makefile created by Dev-C++ 5.11
CPP = g++.exe
CC = gcc.exe
WINDRES = windres.exe
OBJ = main.o
LINKOBJ = main.o
LIBS = -L"C:/Program Files/Dev-Cpp/MinGW64/x86_64-w64-mingw32/lib32" -static-libgcc -m32
INCS = -I"C:/Program Files/Dev-Cpp/MinGW64/include" -I"C:/Program Files/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"C:/Program Files/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include"
CXXINCS = -I"C:/Program Files/Dev-Cpp/MinGW64/include" -I"C:/Program Files/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"C:/Program Files/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include" -I"C:/Program Files/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++"
BIN = 学生成绩管理系统.exe
CXXFLAGS = $(CXXINCS) -m32
CFLAGS = $(INCS) -m32
RM = rm.exe -f
.PHONY: all all-before all-after clean clean-custom
all: all-before $(BIN) all-after
clean: clean-custom
${RM} $(OBJ) $(BIN)
$(BIN): $(OBJ)
$(CC) $(LINKOBJ) -o $(BIN) $(LIBS)
main.o: main.c
$(CC) -c main.c -o main.o $(CFLAGS)

549
main.c
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#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<conio.h>
#define MAX 2000
struct Student
{
int num; //学号
char name[8]; //姓名
char sex; //性别
int mark[4]; //三门课成绩，最后为平均成绩
};
int get_menu_choice() ;//接受菜单选择
void menu() ;//菜单响应
void main_menu(); //显示菜单
void Sort_menu();//排序菜单
int all; //总人数
char password[20];//密码
struct Student student[MAX];
void Init(); //初始化,文件不存在，则建立，同时记录下文件中的记录数
FILE *file_operate(const char *mode);//文件操作
void Delete(FILE *fp); //删除记录
void Alter(FILE *fp); //修改记录信息
void Show(); //显示打印所有的信息
void Save(); //备份信息到文件
void Find(); //查找记录的函数
void Input(FILE *fp); //向管理系统中增加记录
int Inputoneperson(int i); //向数组增加一条记录
void set_psw(); //设置密码
int key_check(); //密码验证
void exchange(int i,int j);//交换两个人的所有信息
void PrintTitle(); //打印头信息
void clear(); //清屏
void Show_student(int i); //显示打印一个人的信息
int CheckNumber(int num_temp); //检查学号是否存在，存在返回序号，不存在返回-1
void Inputfile(int i,FILE *fp); //把下标为i 的记录写入文件
void Readfile(int i,FILE *fp); //读一条记录从文件
int Sort_menu_choice();//选择是按学号还是成绩排序
void Sort_save();//排序后数据写入文件
void Sort_num();//选择是按学号排序
void Sort_mark();//选择是按成绩排序
main() //主函数
{
printf("\n");
printf(" |**************************************************************************|\n");
printf(" | |\n");
printf(" | |\n");
printf(" | |\n");
printf(" | 欢迎使用学生成绩管理系统 |\n");
printf(" | |\n");
printf(" | |\n");
printf(" | |\n");
printf(" |**************************************************************************|\n");
printf("\n");
if(key_check())
{
Init();
clear();
menu();
}
}
int get_menu_choice()//接受菜单选择
{
int menu_ch; //菜单选项
do
{
printf("Select the choice:");
scanf("%d",&menu_ch);
if((menu_ch<0)||(menu_ch>9))
printf("error!");
}
while((menu_ch<0)||(menu_ch>9));
return(menu_ch);
}
void main_menu() //主菜单
{
printf("\n");
printf(" 欢迎使用学生成绩管理系统 \n");
printf(" ***************************************************************\n");
printf(" || 0.退出系统 | 1.查询信息 ||\n");
printf(" || 2.添加信息 | 3 显示信息 ||\n");
printf(" || 4.删除信息 | 5.修改信息 ||\n");
printf(" || 6.备份信息 | 7.设置密码 ||\n");
printf(" || 8.数据排序 ||\n");
printf(" ***************************************************************\n");
}
void clear()//清屏
{
system("pause");
system("cls");
}
void menu() //菜单响应
{
while(1)
{
main_menu();
switch(get_menu_choice())
{
case 1:Find();clear();
break;
case 2:Input(file_operate("ab"));clear();
break;
case 3:Show();clear();
break;
case 4:Delete(file_operate("wb"));clear();
break;
case 5:Alter(file_operate("wb"));clear();
break;
case 6:Save();clear();
break;
case 7:set_psw();clear();
break;
case 8:Sort_menu();
break;
case 0:system("cls");
printf("\n");
printf("\n");
printf("\n");
printf(" ||**************************************||\n");
printf(" ||**************************************||\n");
printf(" || ||\n");
printf(" || ||\n");
printf(" || 感谢使用！ || \n");
printf(" || ||\n");
printf(" || ||\n");
printf(" ||**************************************||\n");
printf(" ||**************************************||\n");
exit(0);
}
}
}
void Show()//显示打印所有的信息
{
int i;
printf("有%d个记录:\n",all);
PrintTitle();
for(i=0;i<all;i++)
Show_student(i);
}
void Show_student(int i) //显示打印一个人的信息
{
printf(" %8d %8s %1c %3d %3d %3d %3d \n",student[i].num,student[i].name,student[i].sex,student[i].mark[0],student[i].mark[1],student[i].mark[2],student[i].mark[3]);
}
void PrintTitle()//打印头信息
{
printf("-----------------------------------------------------------------\n");
printf(" 学号 姓名 性别 语文 数学 英语 平均成绩 \n");
printf("-----------------------------------------------------------------\n");
}
void Init() //初始化,文件不存在，则建立，同时记录下文件中的记录数
{
int i;
FILE *fp;
all=0;
if((fp=fopen("student.txt","rb"))==NULL)
{
fp=fopen("student.txt","ab");
clear();
menu();
}
else
{
for(i=0;feof(fp)==0;i++)
Readfile(i,fp);
}
all=i-1;
fclose(fp);
}
void Find()//查找记录的函数
{
int i,num_temp;
FILE *fp;
fp=file_operate("rb");
for(i=0;feof(fp)==0;i++)
Readfile(i,fp);
all=i-1;
fclose(fp);
printf("Input the number that someone you want to find:(如10141303)");
scanf("%d",&num_temp);
i=CheckNumber(num_temp);
if(i>=0)
{
PrintTitle();
Show_student(i);
}
else
{
printf("numbody is the number:%d\n",num_temp);
}
}
void Readfile(int i,FILE *fp)//从文件中读记录
{
int j;
fscanf(fp,"%8d",&student[i].num);
fscanf(fp,"%8s ",&student[i].name);
fscanf(fp,"%1c",&student[i].sex);
for(j=0;j<4;j++)
fscanf(fp,"%3d",&student[i].mark[j]);
}
int CheckNumber(int num_temp)//检查学号是否存在，存在返回序号，不存在返回-1
{
int i,result;
for(i=0;i<all;i++)
{
if(student[i].num==num_temp)
{
result=1;
break;
}
}
if(result==1)
return i;
else
return -1;
}
int Inputoneperson(int i)//向数组增加一条记录
{
int j,sum=0;
int num_temp;
do
{
printf("输入学号:");
scanf("%d",&num_temp);
if(num_temp>999999999)
printf("error!");
}
while(num_temp>99999999);
if(CheckNumber(num_temp)>0)
{
printf("Number repeatly!\n");
return 0;
}
else
{
student[i].num=num_temp;
printf("Input name（lessthan 20 numbers）：");
scanf("%s",&student[i].name);
printf("Sex(M/W):");
scanf("%s",&student[i].sex);
printf("\n 语文\t 数学\t 英语\n");
for(j=0;j<3;j++)
{
scanf("%d",&student[i].mark[j]);
sum=sum+student[i].mark[j];
}
student[i].mark[3]=sum/3;
PrintTitle();
Show_student(i);
return 1;
}
}
void Input(FILE *fp)//向管理系统中增加记录
{
int i;
i=all;
if(Inputoneperson(i))
{
all++;
Inputfile(i,fp);
}
fclose(fp);
}
void Inputfile(int i,FILE *fp) //把下标为i 的记录写入文件
{
int j;
fprintf(fp,"%8d",student[i].num);
fprintf(fp,"%8s ",student[i].name);
fprintf(fp,"%1c ",student[i].sex);
for(j=0;j<4;j++)
fprintf(fp,"%3d ",student[i].mark[j]);
}
void exchange(int i,int j)//交换两个人的所有信息
{
int k;
int num_temp,mark_temp;
char name_temp[20],sex_temp;
num_temp=student[i].num;
student[i].num=student[j].num;
student[j].num=num_temp;
for(k=0;k<4;k++)
{
mark_temp=student[i].mark[k];
student[i].mark[k]=student[j].mark[k];
student[j].mark[k]=mark_temp;
}
strcpy(name_temp,student[i].name);
strcpy(student[i].name,student[j].name);
strcpy(student[j].name,name_temp);
sex_temp=student[i].sex;
student[i].sex=student[j].sex;
student[j].sex=sex_temp;
}
FILE *file_operate(const char *mode)//文件操作
{
char choice;
FILE *fp;
do
{
fflush(stdin);
if((fp=fopen("student.txt",mode))==NULL)
{
puts("Fail to open the file!");
puts("Try again!(Y/N)?");
scanf("%c",&choice);
}
}
while(choice=='y'||choice=='Y');
if(choice=='n'||choice=='N')
exit(1);
return(fp);
}
void Save()//备份信息到文件
{
int i;
char filename[10],ch;
FILE *fp;
printf("Name the new file：(less than ten bits)");
scanf("%s",filename);
if((fp=fopen(filename,"wb"))==NULL)
{
printf("Fail to build the file!\n");
exit(0);
}
ch=getchar();
for(i=0;i<all;i++)
Inputfile(i,fp);
Show();
fclose(fp);
}
void Delete(FILE *fp)//删除记录
{
int i,j,k,num_temp,choice2,t=0;
char str[5];
printf("make sure you will delete it(Y/N)");
gets(str);
if(str[0]!='N'&&str[0]!='n');
t=1;
if(t==1)
{
printf("Inpute the number someone you needed:(如10141301)");
scanf("%d",&num_temp);
i=CheckNumber(num_temp);
if(i>=0)
{
PrintTitle();
Show_student(i);
printf("Sure to delete the person?(1,Y/2,N)");
scanf("%d",&choice2);
if(choice2==1)
{
for(j=i;j<all;j++)
{
strcpy(student[j].name,student[j+1].name);
student[j].sex=student[j+1].sex;
student[j].num=student[j+1].num;
for(k=0;k<4;k++)
{
student[j].mark[k]=student[j+1].mark[k];
}
}
all--;
for(k=0;k<all;k++)
Inputfile(k,fp);
}
}
}
else
printf("numbody is the number:%d\n",num_temp);
}
void Alter(FILE *fp)//修改记录信息
{
int i,j,num_temp,sum=0,t;
char str[5];
printf("make sure you will alter it(Y/N)");
gets(str);
if(str[0]!='N'&&str[0]!='n')
t=1;
if(t==1)
{
printf("Inpute the number somesoe you want to alter:(如10141301)");
scanf("%d",&num_temp);
i=CheckNumber(num_temp);
if(i>=0)
{
student[i].num=num_temp;
printf("Input name（lessthan 20 numbers）：");
scanf("%s",&student[i].name);
printf("Sex(M/W):");
scanf("%s",&student[i].sex);
printf("\n 语文\t 数学\t 英语\n");
for(j=0;j<3;j++)
{
scanf("%d",&student[i].mark[j]);
sum=sum+student[i].mark[j];
}
student[i].mark[3]=sum/3;
PrintTitle();
Show_student(i);
for(j=0;j<all;j++)
Inputfile(j,fp);
}
}
else
printf("numbody is the number:%d\n",num_temp);
}
int Sort_menu_choice()//选择是按学号还是成绩排序
{
int choice;
do
{
printf("输入排序方式(1 按学号 2 按平均成绩)： ");
scanf("%d",&choice);
if((choice<0)||(choice>2))
printf("error!");
}
while((choice<0)||(choice>2));
return(choice);
}
void Sort_num()//选择是按学号排序
{
int i,j;
for(i=0;i<all-1;i++)
{
for(j=i+1;j<all;j++)
{
if(student[i].num>student[j].num)
exchange(i,j);
}
}
}
void Sort_mark()//选择是按成绩排序
{
int i,j;
for(i=0;i<all-1;i++)
{
for(j=i+1;j<all;j++)
{
if(student[i].mark[3]<student[j].mark[3])
exchange(i,j);
}
}
}
void Sort_menu()//排序菜单
{
switch(Sort_menu_choice())
{
case 1:Sort_num();
Sort_save();
clear();
break;
case 2:Sort_mark();
Sort_save();
clear();
break;
}
}
void Sort_save()//排序后数据写入文件
{
int i;
FILE *fp;
if((fp=fopen("student.txt","wb"))==NULL)
{
printf("Fail to save the file!\n");
exit(0);
}
for(i=0;i<all;i++)
Inputfile(i,fp);
Show();
fclose(fp);
}
void set_psw()//设置密码
{
char key_set[20],key_check[20],c;
unsigned int i;
FILE *fp;
do
{ printf("You must set password first!\n");
printf("Enter password:(lessthan 12 numbers and key'.'for end)\n");
for(i=0;(c=getch())!=' ';i++)
{
putchar('*');
key_set[i]=c;
}
key_set[i]='\0';
printf("\n------------\n");
printf("conform password:");
for(i=0;(c=getch())!=' ';i++)
{
putchar('*');
key_check[i]=c;
}
key_check[i]='\0';
printf("\n------------\n");
if(strcmp(key_set,key_check)==0)
{printf("Set password success!");
strcpy(password,key_set);
}
else
printf("error!\n");
}
while(strcmp(key_set,key_check)!=0);
clear();
fp=fopen("password.txt","wb");
fprintf(fp,"%s",password);
fclose(fp);
}
int key_check()//密码验证
{
unsigned int i=1,j=1;
FILE *fp;
char pword[20],c;
if((fp=fopen("password.txt","rb"))==NULL)
{
fp=fopen("password.txt","a");
set_psw();
}
fscanf(fp,"%s",password);
fclose(fp);
do
{
printf("\nInput password：key' 'for end(%d/three times)",j);
for(j=0;(c=getch())!=' ';j++)
{
putchar('*');
pword[j]=c;
}
pword[j]='\0';
i++;
}
while(strcmp(pword,password)!=0&&i<=3);
if(i<=3)
return 1;
else
{
printf("You have tryed for three times,fail to open the file!\n");
return 0;
}
}

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main.o
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51
学生成绩管理系统.dev
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[Project]
FileName=学生成绩管理系统.dev
Name=学生成绩管理系统
Type=1
Ver=2
ObjFiles=
Includes=
Libs=
PrivateResource=
ResourceIncludes=
MakeIncludes=
Compiler=
CppCompiler=
Linker=
IsCpp=0
Icon=
ExeOutput=
ObjectOutput=
LogOutput=
LogOutputEnabled=0
OverrideOutput=0
OverrideOutputName=
HostApplication=
UseCustomMakefile=0
CustomMakefile=
CommandLine=
Folders=
IncludeVersionInfo=0
SupportXPThemes=0
CompilerSet=3
CompilerSettings=0000000100000000000000000
[VersionInfo]
Major=1
Minor=0
Release=0
Build=0
LanguageID=1033
CharsetID=1252
CompanyName=
FileVersion=
FileDescription=Developed using the Dev-C++ IDE
InternalName=
LegalCopyright=
LegalTrademarks=
OriginalFilename=
ProductName=
ProductVersion=
AutoIncBuildNr=0
SyncProduct=1

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