C语言学生成绩管理系统
C语言学生成绩管理系统
想要它变成什么样，自己做一下修改就是了：
#include<iostream>
#include<fstream>
#include <windows.h>
#include<string>
#include <time.h>
#include<cstdlib>
#include<iomanip>
using namespace std;
int n=0;
#define M cout<<
#define N ;Sleep(80);
#define Y N M
#define NN cout<<"╭—————————————————————————————————————————————╮"<<endl;cout<<"∣ num ∣ name∣ age ∣ hig ∣ 语文 ∣ 数学 ∣ 英语 ∣ 平均 ∣ 总分 ∣ 评语 ∣ "<<endl;cout<<"├———-┼———-┼———┼———┼———-┼———-┼———-┼—————┼————┼———-┤"<<endl;cout<<"∣"<<setw(6)<<p1->num<<setw(3)<<"∣"<<setw(7)<<p1->name<<setw(2)<<"∣"<<setw(4)<<p1->age<<setw(4)<<"∣"<<setw(4)<<p1->hig<<setw(4)<<"∣"<<setw(5)<<p1->score[0]<<setw(4)<<"∣"<<setw(5)<<p1->score[1]<<setw(4)<<"∣"<<setw(5)<<p1->score[2]<<setw(4)<<"∣"<<setw(8)<<setprecision(3)<<p1->ave<<setw(4)<<"∣"<<setw(6)<<p1->sum<<setw(4)<<"∣"<<setw(7)<<p1->p_y<<setw(2)<<"∣"<<endl;cout<<" ￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣ "<<endl;
////////////////////////////////////////////////////////////////////////////////////////////
////
////
////
////////////////////////////////////////////////////////////////////////////////////////////
class ji_ke_1_class
{
int num;
char name[20];
int age;
float hig;
int score[3];
float ave;
float sum;
char p_y[10];
public:
void set_date();
void display();
void creat();
void print();
void insert();
void exchange(ji_ke_1_class *p1,ji_ke_1_class *p2);
void sort(int j);
void index(int q,char aa[20]);
void del(int num);
void save();
void tongji();
void load();
class ji_ke_1_class *next;
};
ji_ke_1_class *head,*p1,*p2,*p;
void ji_ke_1_class::set_date ()
{
cout<<"学号_姓名_年龄_身高_"<<endl;
cin>>num>>name>>age>>hig;
cout<<"-----分数::语文_数学_英语_"<<endl<<" ";
for(int i=0;i<3;i++)
cin>>score[i] ;
}
void ji_ke_1_class::display()
{
ji_ke_1_class *p;
int i;
for( p=head , i=0 ; i<n ; i++ , p=p->next )
cout<<"∣"
<<setw(6)<<p->num
<<setw(3)<<"∣"
<<setw(7)<<p->name
<<setw(2)<<"∣"
<<setw(4)<<p->age
<<setw(4)<<"∣"
<<setw(4)<<p->hig
<<setw(4)<<"∣"
<<setw(5)<<p->score[0]
<<setw(4)<<"∣"
<<setw(5)<<p->score[1]
<<setw(4)<<"∣"
<<setw(5)<<p->score[2]
<<setw(4)<<"∣"
<<setw(8)<<setprecision(3)<<p->ave
<<setw(4)<<"∣"
<<setw(6)<<p->sum
<<setw(4)<<"∣"
<<setw(7)<<p->p_y
<<setw(2)<<"∣"
<<endl;
}
void ji_ke_1_class::print()
{
ji_ke_1_class *p0=head;
cout<<"╭—————————————————————————————————————————————╮"<<endl;
cout<<"∣ num ∣ name∣ age ∣ hig ∣ 语文 ∣ 数学 ∣ 英语 ∣ 平均 ∣ 总分 ∣ 评语 ∣ "<<endl;
cout<<"├———-┼———-┼———┼———┼———-┼———-┼———-┼—————┼————┼———-┤"<<endl;
p0->display();
cout<<" ￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣ "<<endl;
}
void ji_ke_1_class::creat()
{
int m=0;
float total=0;
head=p2=p1=new ji_ke_1_class;
p1->set_date();
while(p1->num!=0)
{
n=n+1;
if(n==1)
head=p1;
else
p2->next=p1;
p2=p1;
p1=new ji_ke_1_class;
p1->set_date ();
}
p2->next=0;
ji_ke_1_class *p=new ji_ke_1_class;
for(p=head ; m<n ; p=p->next )
{
total=total+p->score[0]+p->score[1]+p->score[2];
p->sum=total;
p->ave=total/3;
cout<<p->sum<<"--------__"<<p->ave<<endl;
if(p->ave>85) strcpy( p->p_y , "优秀" );
else if(p->ave>75) strcpy( p->p_y , "中等" );
else if(p->ave>60) strcpy( p->p_y , "及格" );
else strcpy( p->p_y , "不及格" );
total=0;
m+=1;
}
}
template<typename T1>
void exchang1(T1 &a,T1 &b)
{
int t;
t=a;
a=b;
b=t;
}
template<typename T2>
void exchang2(T2 &a,T2 &b)
{
float t;
t=a;
a=b;
b=t;
}
void ji_ke_1_class::exchange(ji_ke_1_class *p1,ji_ke_1_class *p2)
{
char t2[30],t1[10];
exchang1(p1->num,p2->num);
exchang1(p1->score[1],p2->score[1]);
exchang1(p1->score[0],p2->score[0]);
exchang1(p1->score[2],p2->score[2]);
exchang2(p1->hig,p2->hig);
exchang2(p1->ave,p2->ave);
exchang2(p1->sum,p2->sum);
strcpy(t2,p1->name);
strcpy(p1->name,p2->name);
strcpy(p2->name,t2);
strcpy(t1,p1->p_y );
strcpy(p1->p_y ,p2->p_y );
strcpy(p2->p_y ,t1);
}
void ji_ke_1_class::sort(int j)
{
ji_ke_1_class *p1,*p2;
int m,t;
cout<<endl;
for(p1=head , m=0 ; m<n-1 ; m++ , p1=p1->next)
for(p2=p1->next,t=m+1 ; t<n ; t++ , p2=p2->next)
{
if( (p1->num) > (p2->num) && j==1 ) exchange(p1,p2);
if( (p1->sum) < (p2->sum) && j==2 ) exchange(p1,p2);
}
print();
cout<<endl;
}
void ji_ke_1_class::del(int num)
{
ji_ke_1_class *p1,*p2;
if(head==0)
{
cout<<"\nlist null!\n";
goto end1;
}
p1=head;
while(num!=p1->num && p1->next!=0)
{
p2=p1;
p1=p1->next;
}
if(num==p1->num)
{
if(p1==head) head=p1->next;
else p2->next=p1->next;
cout<<"\n"<<"恭喜你--deleted the:"<<num<<endl<<endl;
n=n-1;
}
else cout<<num<<"抱歉--好像没有这个数吧！！\n"<<"\n\n";
end1: ;
}
void ji_ke_1_class::insert()
{
float total;
ji_ke_1_class *pt=new ji_ke_1_class;
ji_ke_1_class *p0,*p1,*p2;
pt=new ji_ke_1_class;
pt->set_date();
total=0;
int i;
for(i=0;i<3;i++)
total+=pt->score[i];
pt->sum=total;
pt->ave=total/3;
if(pt->ave>85) strcpy( pt->p_y , "优秀" );
else if(pt->ave>75) strcpy( pt->p_y , "中等" );
else if(pt->ave>60) strcpy( pt->p_y , "及格" );
else strcpy( pt->p_y , "不及格" );
p1=head;
p0=pt;
if(head==0)
{
head=p0;
p0->next=0;
}
else
{
while( (p0->num>p1->num)&&(p1->next!=0))
{
p2=p1;
p1=p1->next;
}
if(p0->num<=p1->num)
{
if(head==p1) head=p0;
else p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=0;
}
}
n=n+1;
}
void ji_ke_1_class::index(int q,char aa[20])
{
ji_ke_1_class *p1=head;
int m=0,j=0;
int len,flag=1;
int a[4];
for( m=0 ; m<n ; p1=p1->next , m++ )
{
a[0]=0;a[1]=0;a[2]=0;a[3]=0;
flag=1;
a[0]=(int)( (p1->num)/1000 ); a[1]=(int)( (p1->num-a[0]*1000 )/100 );
a[2]=(int)( (p1->num-a[1]*100-a[0]*1000 )/10 ); a[3]=(int)( p1->num-a[1]*100-a[0]*1000-a[2]*10 );
for(int i=19 ; i>=0 ; i--)
{
if(aa[i]!=0)
len=i+1;
}
int m[4],k=0,y=0,x=0,d=0;
for(k=0;k<4;k++)
{
d=0;
y=(int)aa[k];
for(x=48;x<=57;x++)
{
d++;
if(x==y) m[k]=(d-1);
}
}
for(j=0 ; j<4 ; j++ )
{
if( a[j]!=m[j] )
flag=0;
}
if( flag==1 && q==1 )
{
NN
break;
}
if( p1->name[0]==aa[0] && p1->name[1]==aa[1] && p1->name[2]==aa[2] && q==2 )
{
NN
break;
}
}
if( m==n ) cout<<"no the student"<<endl;
}
int x[20];
string filename;
void ji_ke_1_class::save()
{
int d,d1=0;
int ii;
cout<<endl<<"请输入存储路径（建议存入当前文件中的data_save中）（例 ---绝对路径：C:\\\\文件名\\\\文件名\\\\数据名.dat \n "
<<" ---相对路径：save\\\\数据名.dat; ）"
<<endl
<<"路径为：";
string cc;
cin>>cc;
cout<<" ╭——————————————╮"<<endl<<"正在保存 ";
for(ii=0;ii<15;ii++)
{
cout<<'\20';
Sleep(15);
}
ifstream file1("程序必用1.dat",ios::binary);
file1.read( (char *)&d , sizeof(d) );
d1=(int)d+1;
file1.close();
string filename0,name_file;
filename0=cc;
name_file=filename0.c_str();
ofstream file2("程序必用1.dat",ios::binary);
file2.write( (char *)&d1 , sizeof(d1) );
file2.close();
ofstream file3("程序必用2.dat", ios::app|ios::out );
file3<<name_file.c_str ()<<" ";
file3.close();
ofstream outfile(cc.c_str(),ios::binary);
if(!outfile)
{
cerr<<"!!!!!"<<endl;
abort();
}
outfile.write( (char *)&n , sizeof(n) );
ji_ke_1_class *p=head;
for(int i=0;i<n;i++,p=p->next)
outfile.write( (char *)p,sizeof(ji_ke_1_class));
outfile.close();
for(ii=0;ii<15;ii++)
{
cout<<'\20';
Sleep(15);
}
cout<<endl<<endl;
cout<<"-----已成功保存！！！！！！"<<endl<<endl;
}
void ji_ke_1_class::load()
{
int h1,h2;
string qq,name[20],name0[20];
ifstream file("程序必用1.dat",ios::binary);
if(!file)
{
cerr<<"open error!!"<<endl;
abort();
}
file.read( (char *)&h1, sizeof(h1) );
h2=int(h1);
cout<<"共有以下 "<<h2<<" 个文件"<<endl;
ifstream file0("程序必用2.dat",ios::in);
if(!file0)
{
cerr<<"open error!!"<<endl;
abort();
}
for(int e=0;e<h2;e++)
{
if(e%2==0) cout<<endl;
file0>>name[e];
name0[e]=name[e];
cout<<"第"<<e+1<<"个文件:"<<setw(16)<<(string)name0[e]<<" ; ";
}
file0.close();
cout<<endl;
loop3:
cout<<endl<<"请输入路径（例 ---绝对路径：C:\\\\文件名\\\\文件名\\\\数据名.dat ---相对路径：save\\\\数据名.dat;）"<<endl ;
cout<<"路径为：";
string ccc;
cin>>ccc;
cout<<" ╭——————————————╮"<<endl<<"正在读取 ";
int ii;
for(ii=0;ii<15;ii++)
{
cout<<'\20';
Sleep(15);
}
ifstream infile(ccc.c_str(),ios::binary);
int c;
ji_ke_1_class t[60],*pp[60];
if(!infile)
{
cout<<endl<<"无此文件; 1---重输 ; other---放弃";
cin>>c;
if(c==1) goto loop3;
else goto loop4;
}
int nn,nnn;
int i;
infile.read( (char *)&nn , sizeof(nn) );
nnn=(int)nn;
n=nnn;
infile.read( (char *)&t[0] , sizeof(ji_ke_1_class) );
head=(ji_ke_1_class *)&t[0];
for(i=1; i<nnn; i++)
{
infile.read( (char *)&t[i] , sizeof(ji_ke_1_class) );
pp[i]=(ji_ke_1_class *)&t[i];
if(i==1)
{
head->next=pp[1];
}
if(i!=1)
{
pp[i-1]->next=pp[i];
}
}
infile.close();
for(ii=0;ii<15;ii++)
{
cout<<'\20';
Sleep(15);
}
cout<<endl;
cout<<endl<<"————————恭喜！！！成功装载，数据文件以可以使用"<<endl<<endl;
loop4:;
}
void ji_ke_1_class::tongji()
{
ji_ke_1_class *pm=head;
int m,by=0,bz=0,bc=0,bj=0;
for(pm=head , m=0 ; m<n ; m++ , pm=pm->next)
{
if( pm->ave >= 85 ) by++;
if( pm->ave < 85 && pm->ave >=75 ) bz++;
if( pm->ave >=60 && pm->ave < 75 ) bj++;
if( pm->ave < 60 ) bc++;
}
cout<<endl
<<"总计 "<<n<<" 人:"<<endl
<<" 优秀生人数:"<<setw(5)<<by<<setw(12)<<"优秀率为:"<<setw(6)<<setprecision(5)<<(double)by/n<<endl
<<" 中等生人数:"<<setw(5)<<bz<<setw(12)<<"中等率为:"<<setw(6)<<setprecision(5)<<(double)bz/n<<endl
<<" 及格生(60-75)人数:"<<setw(5)<<bj<<setw(12)<<"及格率为:"<<setw(6)<<setprecision(5)<<(double)bj/n<<endl
<<" 不及格人数为:"<<setw(5)<<bc<<setw(12)<<"不及格率为:"<<setw(6)<<setprecision(5)<<(double)bc/n<<endl<<endl;
}
void bz()
{
system("cls");
M"欢"Y"迎"Y"使"Y"用"Y"本"Y"程"Y"序"Y"-"Y"-"Y"-"Y"-"Y"-"Y" 使"Y"用"Y"说"Y"明"Y":"N;cout<<endl<<endl;
M"一"Y""Y"、"Y"建"Y"立"Y"自"Y"己"Y"的"Y"数"Y"据"Y"（"Y"建"Y"议"Y"马"Y"上"Y"存"Y"储"Y"！"Y"！"Y"）"Y"按"Y"提"Y"示"Y"操"Y"作"Y"即"Y"可"Y"；"Y"呵"Y"呵"N;cout<<endl<<endl;
M"二"Y""Y"、"Y"注"Y"意"Y"事"Y"项"Y"："Y" 对"Y"链"Y"表"Y"（"Y"数"Y"据"Y"）"Y"若"Y"超"Y"过"Y"6"Y"0"Y"个"Y"，"Y"则"Y"请"Y"联"Y"系"Y""Y""Y"吕"Y""Y""Y"威"Y""Y""Y"___"Y"qq"Y":"Y"921963406"Y","Y"可"Y"免"Y"费"Y"赠"Y"送"Y"所"Y"需"Y"程"Y"序"N;cout<<endl<<endl;
M"三"Y""Y"、"Y"建"Y"链"Y"表"Y"的"Y"最"Y"后"Y"使"Y"全"Y"为"Y"0"Y"，"Y"建"Y"表"Y"结"Y"束"N;cout<<endl<<endl;
M"四"Y""Y"、"Y"因"Y"技"Y"术"Y"有"Y"限"Y"，"Y"清"Y"屏"Y"函"Y"数"Y"造"Y"成"Y"head"Y"丢"Y"失"Y"；"Y"慎"Y"用"Y"！"Y"！"N;cout<<endl<<endl<<" ";
M"制"Y"作"Y"人"Y":"Y""Y""Y""Y""Y"吕"Y""Y""Y""Y""Y"威"Y""Y""Y""Y""N;cout<<endl<<endl;
}
////////////////////////////////////////////////////////////////////////////////////////////
////
////
////////////////////////////////////////////////////////////////////////////////////////////
void mult()
{tm * tp;
time_t t;
cout<<"____________________________________________________________________________________________________\n";
cout<<" ╭——————————————╮\n"
<<" ";
t=time(NULL);
tp=localtime(&t);
cout<<tp->tm_mon+1<<"-"<<tp->tm_mday<<"-"<<tp->tm_year+1900<<" ";
cout<<tp->tm_hour<<":"<<tp->tm_min<<":"<<tp->tm_sec;
cout<<" ∣ 菜单 ∣ \n"
<<" ∣____________________________∣\n"
<<" ∣ 0---创建数据 ∣\n"
<<" ∣ ∣\n"
<<" ∣ 1---按学号排序 ∣\n"
<<" ∣ ∣\n"
<<" ∣ 2---按分数排序 ∣\n"
<<" ∣ ∣\n"
<<" ∣ 3---删除一学生信息 ∣\n"
<<" ∣ ∣\n"
<<" ∣ 4---插入一学生信息 ∣\n"
<<" ∣ ∣\n"
<<" ∣ 5---检索一学生 ∣\n"
<<" ∣ ∣\n"
<<" ∣ 6---统计数据 ∣\n"
<<" ∣ ∣\n"
<<" ∣ 7---保存 ∣\n"
<<" ∣ ∣\n"
<<" ∣ 8---打开 ∣\n"
<<" ∣ ∣\n"
<<" ∣ 9---清屏 ∣\n"
<<" ∣ ∣\n"
<<" ∣ 10--帮助（建议先看） ∣\n"
<<" ∣ other---quit ∣\n"
<<" ∣ ∣\n"
<<" ￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣\n";
}
void select()
{
int fl=0,a,num2;
ji_ke_1_class aa;
loop:
cout<<"What can I do for you ? ? ?（输入命令---数字） :";
cin>>a;
switch(a)
{
case 0 :
{
cout<<"输入数据\n";
aa.creat();
aa.print();
goto loop;
}
case 1 :
{
aa.sort(1);
goto loop;
}
case 2 :
{
aa.sort(2);
goto loop;
}
case 3 :
{
cout<<"num========";
cin>>num2;
aa.del(num2);
goto loop;
}
case 4 :
{
aa.insert();
goto loop;
}
case 5 :
{
char xx[20]={0};
cout<<"输入要查询的学生的学号 或 姓名：";
cin>>xx;
if( xx[0]>=48 && xx[0]<=57 )
aa.index(1,xx);
else
aa.index(2,xx);
goto loop;
}
case 6 :
{
aa.tongji();
goto loop;
}
case 7 :
{
aa.save();
fl=1;
goto loop;
}
case 8 :
{
aa.load();
goto loop;
}
case 9 :
{
ji_ke_1_class *nn=new ji_ke_1_class;
head=nn;
system("cls");//清屏造成head丢失-------------------------------------------------------？？？？？？？？？？？？？？？？？？
nn=head;
mult();
goto loop;
}
case 10 :
{
bz();
mult();
goto loop;
}
default :
{
if(fl=0)
{
char f;
cout<<"你想要储存吗？y/N";
cin>>f;
if(f=='y'||f=='y')
{
aa.save();
fl=1;
goto loop;
}
else goto end;
}
else goto end;
}
}
end:;
}
void main()
{
int q2=0;
ifstream file0("程序必用1.dat",ios::binary);
if(!file0)
{
file0.close();
ofstream file1("程序必用1.dat",ios::binary);
file1.write( (char *)&q2 , sizeof(q2) );
file1.close();
goto loop5;
}
file0.close();
loop5:
mult();
select();
}