C語言程序學生信息系統源程序

ID:585024 · 發表于 2019-7-17 10:54

#include<stdio.h>
#include<stdlib.h>
#define N 100 //----------------------------------------函數聲明
void init();
char welcome();
void InputInfo();
void view();
void xiugai();
void DeleteInfo();
void paiming1(struct student_info student[]); void paiming2(struct student_info student[]); void ViewAll();
void PaimingView();
void exit();
struct student_info input();
void SortInfo(struct student_info student[]); void ViewInfo(struct student_info *sp);
void SaveStruct(struct student_info *sp,int size,int n,char filename[20]);
void LoadStruct(struct student_info *sp,int size,int n,char filename[20]);
void SaveInt(int *p,int size,int n,char filename[20]); void LoadInt(int *p,int size,int n,char filename[20]); int NumExist(struct student_info student[],int num);
//---------------------------------定義學生信息結構體
struct student_info
{
int num; //學號
char name[6]; //姓名
char sex[5]; //性別
char adress[20]; //家庭住址
char tel[10]; //電話
int chinese,math,english,huping,pingde,jiaoping,paiming1,paiming2;
//語文數學英語互評品德教評
double ave,zhongping;
// 平均綜合
//每個學生的信息為:學號、姓名、性別、家庭住址、聯系電話、語文、數學、外語三門單科成績、 //考試平均成績、考試名次、師兄互評分、品德成績、任課教師評分、綜合測評總分、綜合測評名次。 //考試平均成績、師兄互評分、品德成績、任課教師評分分別占綜合測評總分的60%，10%，10%，20%。 };
//---------------------------------定義全局結構體數據
};
struct student_info student[100];
int counter,PM;
//----------------------------------------------主函數
void main()
{
char select;
init(); //調用初始化函數
while(1)
{
select=welcome();
switch(select)
{
case '1': system("cls"); InputInfo(); break; //選項1:輸入學生信息
case '2': system("cls"); xiugai(); break; //選項2:修改學生信息
case '3': system("cls");DeleteInfo(); break; //選項3:刪除學生信息
case '4': system("cls"); view(); break; //選項4:瀏覽學生信息
case '5': system("cls");paiming1(student);paiming2(student);PM=1;getchar();
getchar(); system("cls"); break; //選項5:學生信息排名
case '6': system("cls"); ViewAll();break; //選項6:瀏覽全部學生信息
case '7': system("cls"); PaimingView();break; //選項7:查詢排名
case '8': system("cls"); exit(); break; //選項8:退出
}}} //----------------------------------------初始化函數
void init()
{
FILE *fp;
fp=fopen("counter.dat","rb"); //打開計數變量counter文件
if(fp!=NULL) //載入counter
{
fclose(fp);
LoadInt(&counter,sizeof(counter),1,"counter.dat");
}
else
{
fp=fopen("counter.dat","wb"); //若沒有counter文件，則創建一個，counter初始為0。
fclose(fp);
counter=0;
}
if(counter!=0) //載入學生數據
LoadStruct(student,sizeof(struct student_info),counter,"student_info.dat");
} //----------------------------------------歡迎函數
char welcome()
{
char select;
while(1)
{
system("cls");
printf("\t\t歡迎使用學生信息管理系統 \n");
printf("\n");
printf("1.錄入學生信息 \n\n");
printf("2.修改學生信息 \n\n");
printf("3.刪除學生信息 \n\n");
printf("4.瀏覽學生信息 \n\n");
printf("5.排名學生成績 \n\n");
printf("6.瀏覽所有學生信息 \n\n");
printf("7.查詢排名 \n\n");
printf("8.退出 \n\n");
printf("輸入相應的功能序號:");
select=getchar();
if(select=='1'||select=='2'||select=='3'||select=='4'||select=='5'||select=='6'||select=='7'||select=='8')
return select;
system("cls");
continue;
}}
//----------------------------------1.錄入學生信息-----------------------------------
void InputInfo()
{
int i,n;
printf("需要錄入多少位學生的信息:");
scanf("%d",&n);
system("cls");
for(i=1;i<=n;i++)
{
student[counter]=input();
counter++;
}
PM=0;
SortInfo(student);
SaveStruct(student,sizeof(struct student_info),counter,"student_info.dat");
SaveInt(&counter,sizeof(counter),1,"counter.dat");
}
//-------------------------------------2.修改學生信息----------------------------------------
void xiugai()
{
int i,num;
char YN,select;
printf("請輸入需要修改的學生信息的學號:");
scanf("%d",&num);
getchar();
if((i=NumExist(student,num))==-1)
{
printf("不存在該學號,按回車鍵返回...");
getchar();
system("cls");
return;
}
ViewInfo(&student[i]);
printf("是否要修改,(Y/N):");
scanf("%c",&YN);
getchar();
if(YN !='Y'&& YN !='y')
{
printf("修改取消.");
getchar();
system("cls");
return;
}
system("cls");
printf("1.學號 \n");printf("2.性別 \n");printf("3.家庭住址 \n");printf("4.聯系電話 \n");printf("5.語文成績 \n");
printf("6.數學成績 \n");printf("7.外語成績 \n");printf("8.師兄互評分 \n");printf("9.品德成績 \n");printf("0.任課教師教師評分 \n");
scanf("%c",&select);
switch(select)
{
case '1':printf("修改學號:");scanf("%d",&student[i].num);break;
case '2':printf("修改性別:");scanf("%s",&student[i].sex);break;
case '3':printf("修改家庭住址:");scanf("%s",&student[i].adress);break;
case '4':printf("修改聯系電話:");scanf("%s",&student[i].tel);break;
case '5':printf("修改語文成績:");scanf("%d",&student[i].chinese);break;
case '6':printf("修改數學成績:");scanf("%d",&student[i].math);break;
case '7':printf("修改外語成績:");scanf("%d",&student[i].english);break;
case '8':printf("修改師兄互評分:");scanf("%d",&student[i].huping);break;
case '9':printf("修改品德成績:");scanf("%d",&student[i].pingde);break;
case '0':printf("修改任課教師評分:");scanf("%d",&student[i].jiaoping);break;
}
SortInfo(student);
SaveStruct(student,sizeof(struct student_info),counter,"student_info.dat");
PM=0;
getchar();
printf("修改完成...");
getchar();
system("cls");
}
//-------------------------------------3.刪除學生信息----------------------------------------
void DeleteInfo()
{
int i,j,num;
char YN;
printf("請輸入要刪除的學生信息學號:");
scanf("%d",&num);
getchar();
if((i=NumExist(student,num))==-1)
{
printf("沒有該學號,按回車鍵返回...");
getchar();
system("cls");
return;
}
ViewInfo(&student[i]);
printf("\n確認刪除(Y/N):");
scanf("%c",&YN);
getchar();
if(YN!='Y' && YN!='y')
{
printf("刪除取消...");
}
else
{
for(j=i;j<counter-1;j++)
student[j]=student[j+1];
counter--;
PM=0;
SaveStruct(student,sizeof(struct student_info),counter,"student_info.dat");
SaveInt(&counter,sizeof(counter),counter,"counter.dat");
printf("刪除完成...");
}
getchar();
system("cls");
}
//-------------------------------------4.瀏覽學生信息----------------------------------------
void view()
{
int i,num;
printf("請輸入需要游覽的學生信息的學號:");
scanf("%d",&num);
getchar();
if((i=NumExist(student,num))==-1)
{
printf("不存在該學號,按回車鍵返回...");
getchar();
system("cls");
return;
}
ViewInfo(&student[i]);
printf("\n按回車鍵返回...");
getchar();
system("cls");
return;
}
//-------------------------------------5.平均分、綜合分排名------------------------------------
void paiming1(struct student_info student[])
{
struct student_info *p[N],*temp;
int i,j;
for(i=0;i<counter;i++)
p[i]=&student[i];
for(i=0;i<counter-1;i++)
for(j=i+1;j<counter;j++)
{
if(p[i]->ave < p[j]->ave)
{
temp=p[i];
p[i]=p[j];
p[j]=temp;
}
}
for(i=0;i<counter;i++)
p[i]->paiming1=i+1;
printf("平均分排名完成...\n");
}
//綜合測評分排名
void paiming2(struct student_info student[])
{
struct student_info *p[N],*temp;
int i,j;
for(i=0;i<counter;i++)
p[i]=&student[i];
for(i=0;i<counter-1;i++)
for(j=i+1;j<counter;j++)
{
if(p[i]->zhongping < p[j]->zhongping)
{
temp=p[i];
p[i]=p[j];
p[j]=temp;
}
}
for(i=0;i<counter;i++)
p[i]->paiming2=i+1;
printf("綜合測評分排名完成...\n"); }
//----------------------------------6.瀏覽所有學生信息----------------------------------------
void ViewAll()
{
int i;
for(i=0;i<counter;i++)
{
ViewInfo(&student[i]);
printf("\n");
}
getchar();
printf("回車鍵返回...");
getchar();
system("cls");
}
//----------------------------------------7.查詢排名------------------------------
void PaimingView()
{
int i,num;
printf("輸入要查詢的學號:");
scanf("%d",&num);
getchar();
i=NumExist(student,num);
if(i==-1)
{
printf("該學號不存在...");
getchar();
return;
}
if(PM==0)
{
printf("請先進行成績排名...");
getchar();
return;
}
printf("%s的平均分排名%d\n",student[i].name,student[i].paiming1);
printf("%s的綜合測評分排名%d\n",student[i].name,student[i].paiming2);
printf("按回車鍵返回...");
getchar();
return;
}
//----------------------------------------8.退出----------------------------
void exit()
{
printf("謝謝使用!\n");
exit(0);
}
//----------------------------------------輸入信息函數----------------------------------------
struct student_info input() {
struct student_info stu,*sp;
char YN;
sp=&stu;
while(1)
{
while(1)
{
printf("錄入學號:");
scanf("%d",&sp->num);
getchar();
if(NumExist(student,sp->num)!=-1)
{
printf("該學號已存在,請重新輸入...");
getchar();
system("cls");
continue;
}
break;
}
printf("錄入姓名:");
gets(sp->name);
printf("錄入性別:");
gets(sp->sex);
printf("錄入家庭住址:");
gets(sp->adress);
printf("錄入聯系電話:");
gets(sp->tel);
printf("\n接下來錄入成績\n");
printf("語文:");
scanf("%d",&sp->chinese);
printf("數學:");
scanf("%d",&sp->math);
printf("英語:");
scanf("%d",&sp->english);
sp->ave=(sp->chinese+sp->math+sp->english)/3.0;
printf("師兄互評:");
scanf("%d",&sp->huping);
printf("品德分數:");
scanf("%d",&sp->pingde);
printf("教師評價:");
scanf("%d",&sp->jiaoping);
getchar();
sp->zhongping=(sp->ave*0.6+sp->huping*0.1+sp->pingde*0.1+sp->jiaoping*0.2);
printf("錄入完畢，確認信息是否正確(Y/N)");
YN=getchar();
getchar();
if(YN=='Y'|| YN=='y')
break;
else
{
printf("按回車鍵重新錄入信息。");
getchar();
system("cls");
continue;
}
}
system("cls");
return stu;
}
//----------------------------------------排序函數
void SortInfo(struct student_info student[])
{
int i,j;
struct student_info temp;
for(i=0;i<counter-1;i++)
for(j=i+1;j<=counter-1;j++)
{if(student[i].num<student[j].num)
{temp=student[i];
student[i]=student[j];
student[j]=temp;}}
}
//----------------------------------------顯示學生信息
void ViewInfo(struct student_info *sp)
{
printf("學號\t姓名\t性別\t家庭住址\t聯系電話\n");
printf("%d\t%s\t%s\t%s\t\t%s\n",sp->num,sp->name,sp->sex,sp->adress,sp->tel);
printf("語文\t數學\t英語\t互評\t品德\t教評\t平均分\t綜合分\n");
printf("%d\t%d\t%d\t%d\t%d\t%d\t%.2f\t%.2f\t\n",sp->chinese,sp->math,sp->english,sp->huping,sp->pingde,sp->jiaoping,sp->ave,sp->zhongping);
if(PM==1)
{
printf("平均分排名\t綜合測評分排名\n");
printf("%d\t\t%d\n",sp->paiming1,sp->paiming2);
}
}
//-----------------------------------信息存盤(結構體)----------------------------------------
void SaveStruct(struct student_info *sp,int size,int n,char filename[20])
{
FILE *fp;
fp=fopen(filename,"wb");
fwrite(sp,size,n,fp);
fclose(fp);
}
//-----------------------------------讀取信息(結構體)----------------------------------------
void LoadStruct(struct student_info *sp,int size,int n,char filename[20])
{
FILE *fp;
fp=fopen(filename,"rb");
fread(sp,size,n,fp);
fclose(fp);
}
//-------------------------------------信息存盤(整型)----------------------------------------
void SaveInt(int *p,int size,int n,char filename[20])
{
FILE *fp;
fp=fopen(filename,"wb");
fwrite(p,size,n,fp);
fclose(fp);
}
//-------------------------------------讀取信息(整型)----------------------------------------
void LoadInt(int *p,int size,int n,char filename[20])
{
FILE *fp;
fp=fopen(filename,"rb");
fread(p,size,n,fp);
fclose(fp);
}
//----------------------------------------檢索學號
int NumExist(struct student_info student[],int num)
{
int i;
for(i=0;i<counter;i++)
{
if(student[i].num==num)
return i;
}
return -1;
}

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C語言程序學生信息系統源程序

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