選択システムc++設計と実現

著者の自叙伝
このコードはあまり注釈を付けていませんが、難易度係数は高くありません.設計面での最適化と複数回の呼び出しが難しいだけです.墨跡はなく、直接コードをつけて、選択システムを設計する時に多くの先輩たちに聞いて、ここでも彼らの強力な支持に感謝します.
コード#コード#

#include
#include
#include
#include 
#include
#include
using namespace std;
void menu();
void student1();
void student2();
void student3();
void student4();
void teacher();
void teacher1();
void teacher2();
void teacher3();
int tpassword();
int spassword();
void save();
void turn();
int u,d;
class course
{
     
public:
	char cname[10];
	course * next;
}*chead=NULL;
class student
{
     
public:
	int number;
	char name[10];
	char password[7];
	int cnumber;
	char course[6][20];
	student * next; 
}*head=NULL;
void menu()//   
{
     
menu:
	system("cls");
	cout<<endl<<endl;
	cout<<"*******************************************
"
		<<"*                                         *
"
		<<"*                                    *
"
		<<"*                                         *
"
		<<"*                                         *
"
		<<"*         :                           *
"
		<<"*               1.                *
"
		<<"*                                         *
"
		<<"*               2.                *
"
		<<"*                                         *
"
		<<"*               3.                    *
"
		<<"*******************************************
"<<endl;
	while(1)
	{
     		
		int a;
		cout<<"
\t\t       : ";
		cin>>a;
		if(a==1)   {
     student1();goto menu;}
		else if(a==2)  {
     teacher();goto menu;}
		else if(a==3) {
     save(); break;}
		else    cout<<"\t\t\t\t\t    !";
	}
}
void teacher() //    
{
     
	int m;
	m=tpassword();
	if(m==1)
	{
     
teacher1:	
		system("cls");
		cout<<"


"
			<<"※※※※※※※※※※※※※※※※※※※※※※※※※
"
			<<"※                                              ※
"
			<<"※                                      ※
"
			<<"※                                              ※
"
			<<"※        :                                 ※
"
			<<"※            1.         2.             ※
"
			<<"※            3.         4.             ※
"
			<<"※                                              ※
"
			<<"※※※※※※※※※※※※※※※※※※※※※※※※※
"<<endl;
		while(1)
		{
     	
			cout<<"\t\t\t       : ";
			int a;cin>>a;
			if(a==1)
			{
     
				teacher1();
				cout<<"                       (y/n)";
				char q;cin>>q;
				if(q=='y')goto teacher1;
				else if(q=='n')break;
			}
			else if(a==2)
			{
     
				teacher2();
				cout<<"                       (y/n)";
				char q;cin>>q;
				if(q=='y')goto teacher1;
				else if(q=='n')break;
			}
			else if(a==3)
			{
     
				teacher3();
				cout<<"                       (y/n)";
				char q;cin>>q;
				if(q=='y')goto teacher1;
				else if(q=='n')break;
			}
			else if(a==4) {
     system("cls");break;}
			else cout<<"

\t\t\t\t    !";
		}
	}
}
int tpassword()
{
     
	int k=0,i;
	char A[]="123456";
	char B[10];
	char a;
	system("cls");
	for(i=0;i<8;i++)
		cout<<endl;
	while(1)
	{
     
		cout<<"\t\t\t       :";
		i=0;
		while(1)
		{
     
			a=getch();
			if(a==13)
				break;
			B[i]=a;
			i++;
			cout<<"*";
		}
		B[i]='\0';
		if(strcmp(A,B)==0) return 1;
		else
		{
     
			k++;
			cerr<<"

\t\t\t      !     !
"<<endl;
		}
		if(k==2) return 0;
	}
}
void teacher1()//    
{
     
	ofstream outstuf;
	cout<<"         ：(y/n)";
	char k;cin>>k;
	if(k=='n')
	{
     
		student * s,* q;
		s=new student;head=q=s;
		if(u==1)outstuf.open("student1.txt",ios::out);
		else if(u==2)outstuf.open("student2.txt",ios::out);
		cout<<"\t          ：";
		int k;cin>>k;
		cout<<"\t       ，  ，    ，          （   1 none）
";
		cin>>s->number>>s->name>>s->password>>s->cnumber>>s->course[0];
		outstuf<<s->number<<'\t'<<setw(8)<<s->name<<'\t'<<s->password<<'\t'<<s->cnumber<<'\t'<<s->course[0]<<'
';
		int i=1;
		for(i=1;i<k;i++)
		{
     
			s=new student;
			cin>>s->number>>s->name>>s->password>>s->cnumber>>s->course[i];
			outstuf<<s->number<<'\t'<<setw(8)<<s->name<<'\t'<<s->password<<'\t'<<s->cnumber<<'\t'<<s->course[i]<<'
';
			q->next=s;
			q=s;
		}
		q->next=NULL;
		outstuf.close();
	}
	else if(k=='y')
	{
     
		student * s,* q;
		s=new student;
		for(q=head;q->next!=NULL;q=q->next);q->next=s;s=q;
		if(u==1)outstuf.open("student1.txt",ios::app);
		else if(u==2)outstuf.open("student2.txt",ios::app);
		cout<<"\t          ：";
		int k;cin>>k;
		cout<<"\t       ，  ，    ，          （   1 1）
";
		cin>>s->number>>s->name>>s->password>>s->cnumber>>s->course[0];
		outstuf<<s->number<<'\t'<<setw(8)<<s->name<<'\t'<<s->password<<'\t'<<s->cnumber<<'\t'<<s->course[0]<<'
';
		int i;
		for(i=1;i<k;i++)
		{
     
			s=new student;
			cin>>s->number>>s->name>>s->password>>s->cnumber>>s->course[i];
			outstuf<<s->number<<'\t'<<setw(8)<<s->name<<'\t'<<s->password<<'\t'<<s->cnumber<<'\t'<<s->course[i]<<'
';
			q->next=s;
			q=s;
		}
		q->next=NULL;
		outstuf.close();
	}
}
void teacher2()//    
{
     
	ofstream outstuf;
	cout<<"         ：(y/n)";
	char k;cin>>k;
	if(k=='n')
	{
     
		course * s,* q;
		s=new course;chead=q=s;
		if(u==1)outstuf.open("course1.txt",ios::out);
		else if(u==2)outstuf.open("course2.txt",ios::out);
		cout<<"\t          ：";
		int k;cin>>k;
		cout<<"\t      :
";
		cin>>s->cname;
		outstuf<<s->cname<<'
';
		for(int i=1;i<k;i++)
		{
     
			s=new course;
			cin>>s->cname;
			outstuf<<s->cname<<'
';
			q->next=s;
			q=s;
		}
		q->next=NULL;
		outstuf.close();
	}
	else if(k=='y')
	{
     
		course * s,* q;
		s=new course;
		for(q=chead;q->next!=NULL;q=q->next);q->next=s;q=s;
		if(u==1)outstuf.open("course1.txt",ios::app);
		else if(u==2)outstuf.open("course2.txt",ios::app);
		cout<<"\t          ：";
		int k;cin>>k;
		cout<<"\t      :
";
		cin>>s->cname;
		outstuf<<s->cname<<'
';
		for(int i=1;i<k;i++)
		{
     
			s=new course;
			cin>>s->cname;
			outstuf<<s->cname<<'
';
			q->next=s;
			q=s;
		}
		q->next=NULL;
		outstuf.close();
	}
}
void teacher3()//      
{
     
	student * p;p=head;
	system("cls");cout<<"




";
	cout<<"          "<<setw(5)<<"  "<<"   "<<setw(5)<<"  "<<"    "<<setw(5)<<"  "<<endl;
	while(p!=NULL)
	{
     
		cout<<"          "<<setw(5)<<p->number<<"   "<<setw(5)<<p->name<<"    ";
		for(int i=0;i<p->cnumber;i++)cout<<p->course[i]<<"    ";
		cout<<endl;
		p=p->next;
	}
}
void student1()//    
{
     
	cout<<"\t\t\t       :";
	int m, b;cin>>b;d=b-1;
	m=spassword();
	if(m==1)
	{
     
student1:
		system("cls");//  
		cout<<"


";
		cout<<"※※※※※※※※※※※※※※※※※※※※※※※※※※
"
			<<"※                                        ※
"
			<<"※                                                ※
"
			<<"※                        :                   ※
"
			<<"※                   1、                      ※
"
			<<"※                   2、                      ※
"
			<<"※                   3、                      ※
"
			<<"※                   4、                     ※
"
			<<"※                                                ※
"
			<<"※※※※※※※※※※※※※※※※※※※※※※※※※※
"<<endl;
		while(1)
		{
     	
			int a,k=1;
			cout<<"\t\t\t       : ";
			cin>>a;
			if(a==1)
			{
     
				student2();
				cout<<"                       (y/n)";
				char q;cin>>q;
				if(q=='y')goto student1;
				else if(q=='n')break;
			}
			else if(a==2) {
     student3();goto student1;}
			else if(a==3)
			{
     
				student4();
				cout<<"                       (y/n)";
				char q;cin>>q;
				if(q=='y')goto student1;
				else if(q=='n')break;
			}
			else if(a==4){
     system("cls");break;}
			else cout<<"\t\t\t\t\t    !"<<endl;
		}
	}
}
int spassword()//        
{
     
	student * p;p=head;
	for(int k=0;k<d;k++)
		p=p->next;
	int k=0;char B[7];char c[10];
	gets(c);system("cls");
	while(1)
	{
     
		cout<<"

";
		cout<<"\t\t     :";
		gets(B);
		if(strcmp(p->password,B)==0) return 1;
		else
		{
     			
			k++;cout<<"

\t\t\t      !     !";
			if(k>=3) {
      system("cls");return 0;}
		}
	}
}
void student2()//  
{
     
	student * p;p=head;
	for(int k=0;k<d;k++)
		p=p->next;
	system("cls");
	course *q;
	cout<<'


';
	cout<<"\t\t\t    ：
";
	for(q=chead;q!=NULL;q=q->next)
		cout<<"\t\t\t"<<q->cname<<endl;
	cout<<"\t\t\t         （    ）:   ";
	cin>>p->cnumber;
	cout<<"\t\t\t       ：
";
	int i;
	for(i=0;i<p->cnumber;i++)
	{
     
		cout<<"\t\t\t         ";
		cin>>p->course[i];
	}
	save();
}
void student3()//    
{
     
	student * p;p=head;
	for(int k=0;k<d;k++)
		p=p->next;
t:
	system("cls");
	cout<<"


";
	cout<<"      :";
	char q[7],w[7];
	for(int i=0;i<6;i++)
		cin>>q[i];
	cout<<"
      :";
	for(int i=0;i<6;i++)
		cin>>w[i];
	while(1)
	{
     
		int k;
		for(k=0;k<6;k++)
		{
     
			if(q[k]==w[k]){
     }
			else break;
		}
		if(k==6)
		{
     
			int i=0;
			while(q[i])
			{
     p->password[i]=q[i];i++;}
			p->password[6]='\0';
			break;
		}else goto t;
	}save();
}
void student4()//      
{
     		
	student * p;p=head;
	for(int k=0;k<d;k++)
		p=p->next;
	cout<<"\t\t    ：
";

	for(int i=0;i<p->cnumber;i++)
	{
     
		cout<<"\t\t        ";
		cout<<p->course[i]<<endl;
	}
}
void save() //  
{
     
	ofstream outstuf1;
	ofstream outstuf2;
	if(u==1){
     outstuf1.open("student1.txt",ios::trunc);outstuf2.open("course1.txt",ios::trunc);}
	if(u==2){
     outstuf1.open("student2.txt",ios::trunc);outstuf2.open("course2.txt",ios::trunc);}
	student * s;
	for(s=head;s!=NULL;s=s->next)
	{
     
		int i;
		outstuf1<<s->number<<'\t'<<s->name<<'\t'<<s->password<<'\t'<<s->cnumber;
		for(i=0;i<s->cnumber;i++) outstuf1<<'\t'<<s->course[i];
		outstuf1<<'
';
	}
	course * q;
	q=chead;
	for(q=chead;q!=NULL;q=q->next)
	{
     outstuf2<<q->cname<<'
';}
	outstuf1.close();outstuf2.close();
}
void turn()//  
{
     
	ifstream instuf1;ifstream instuf2;
	if(u==1){
     instuf1.open("student1.txt",ios::in);instuf2.open("course1.txt",ios::in);}
	if(u==2){
     instuf1.open("student2.txt",ios::in);instuf2.open("course2.txt",ios::in);} 
	student * s,* q; int i;
	while(!instuf1.eof())
	{
     
	   
	    s=new student;
		if(head==NULL)
		{
     
		   head=q=s;
	       instuf1>>s->number>>s->name>>s->password>>s->cnumber;
		   for(i=0;i<s->cnumber;i++)instuf1>>s->course[i];
		}
		else 
		{
     
		   s=new student;
		   instuf1>>s->number>>s->name>>s->password>>s->cnumber;
		   for(i=0;i<s->cnumber;i++)instuf1>>s->course[i];
		   q->next=s;
		   q=s;
		}
	}
	q->next=NULL;
	course * z,* x;
	z=new course;chead=x=z;
	instuf2>>z->cname;
	while(!instuf2.eof())
	{
     
		z=new course;
		instuf2>>z->cname;
		x->next=z;
		x=z;
	}
	x->next=NULL;
	instuf1.close();instuf2.close();
}
int main()
{
     
	//
	cout<<endl<<endl;
	cout<<"*******************************************
"
		<<"*                                         *
"
		<<"*                                    *
"
		<<"*                                         *
"
		<<"*         :                           *
"
		<<"*               1.                      *
"
		<<"*                                         *
"
		<<"*               2.                      *
"
		<<"*                                         *
"
		<<"*               3.                    *
"
		<<"*******************************************
"<<endl;
	cout<<"    :  ";
	cin>>u;
	switch(u)
	{
     
	case 1:
		{
     
			cout<<endl;
			cout<<"                   ：（y/n）";
			char a;cin>>a;if(a=='n'){
     turn();menu();}
			else if(a=='y')menu();
		}break;
	case 2:
		{
     
			cout<<endl;
			cout<<"                   ：（y/n）";
			char a;cin>>a;if(a=='n'){
     turn();menu();}
			else if(a=='y')menu();
		}break;
	case 3:break;
	}
}

おい!写さないで、参考にしてください!自分のコードにもっと高い突破をしなければなりません!