unit.cpp

本人课程设计成果

#include<iostream.h>
#include<fstream.h>
#include<string.h>
#include"unit.h"
struct danyuan
{
	char name[30];
	char phone[15];
	char qq[10];
	int sign;
}s1,s2;
long posend;
void basic::showlist(fstream f)
{
	f.seekg(0,ios::end);
	posend=f.tellg();
    f.seekg(0,ios::beg);
	cout<<"  姓名"<<" , "<<"电话"<<endl;

	do
	{
		f.read((char*)&s1,sizeof(danyuan));
		if(s1.name==""||!strcmp(s1.name,"wwwwwwww"))continue;
		else
		
		    cout<<s1.name<<"  "<<s1.phone<<"  "<<endl;
	}
	while(f.tellg()!=posend);
	
}
normal::normal()
{
	sign=0;
};
void normal::lookup(fstream f)
{
	int i=1;
	cout<<"按   1.姓名 2.电话 3.QQ号"<<endl;
	cin>>i;
	f.seekg(0,ios::end);
	posend=f.tellg();
    f.seekg(0,ios::beg);
	switch (i)
	{
	case 1:
		{
			cout<<"请输入姓名:"<<endl;
			cin>>name;
		   do
		   {
		      f.read((char*)&s1,sizeof(danyuan));

		   }while(strcmp(s1.name,name)&&f.tellg()!=posend||!strcmp(s1.name,"wwwwwwww"));
		   if(!strcmp(s1.name,name))
		   {
			   cout<<"姓名:"<<s1.name<<"  电话:"<<s1.phone<<"  QQ号:"<<s1.qq<<"  级别:";
			   showstatus(s1.sign);
			   cout<<endl;
		   }
		   else cout<<"查无此人."<<endl;
		};break;
	case 2:
		{
			cout<<"请输入电话:"<<endl;
			cin>>phone;
            do
			{
		      f.read((char*)&s1,sizeof(danyuan));

			}while(strcmp(s1.phone,phone)&&f.tellg()!=posend);
		    if(!strcmp(s1.phone,phone))
			{
			   cout<<"姓名:"<<s1.name<<"  电话:"<<s1.phone<<"  QQ号:"<<s1.qq<<"  级别:";
			   showstatus(s1.sign);
			   cout<<endl;
			}
			else cout<<"查无此人."<<endl;
		};break;
	case 3:
		{
			cout<<"请输入QQ号:"<<endl;
			cin>>qq;
            do
			{
		      f.read((char*)&s1,sizeof(danyuan));

			}while(strcmp(s1.qq,qq)&&f.tellg()!=posend);
		    if(!strcmp(s1.qq,qq))
			{
			   cout<<"姓名:"<<s1.name<<"  电话:"<<s1.phone<<"  QQ号:"<<s1.qq<<"  级别:";
			   showstatus(s1.sign);
			   cout<<endl;
			}
			else cout<<"查无此人."<<endl;
		};break;
	}
}

void normal::add(fstream f)
{
	f.seekp(0,ios::end);
	cout<<"请输入 姓名,电话,QQ号(默认级别为normal):"<<endl;
	cin>>s1.name>>s1.phone>>s1.qq;
	s1.sign=0;
	f.write((char*)&s1,sizeof(danyuan));
}
void normal::plus(fstream f)
{
	cout<<"请输入姓名:"<<endl;
	cin>>name;
	f.seekg(0,ios::end);
	posend=f.tellg();
    f.seekg(0,ios::beg);
	f.seekp(0,ios::beg);
	do
		   {
		      f.read((char*)&s1,sizeof(danyuan));

		   }while(strcmp(s1.name,name)&&f.tellg()!=posend);
		   if(!strcmp(s1.name,name))
		   {
			   f.seekg(-long(sizeof(danyuan)),ios::cur);
			   long pos=f.tellg();
               s2=s1;
			   strcpy(s2.name ,"wwwwwwww");
			   strcpy(s2.phone,"wwwwwwww");
               strcpy(s2.qq,"wwwwwwww");
			   s2.sign=2;
		       f.seekp(pos,ios::beg);
			   f.write((char*)&s2,sizeof(danyuan));
		   }
		   else cout<<"查无此人"<<endl;
}
void normal::chenge(fstream f)
{
	cout<<"请输入姓名:"<<endl;
	cin>>name;
	f.seekg(0,ios::end);
	posend=f.tellg();
    f.seekg(0,ios::beg);
	f.seekp(0,ios::beg);
	do
		   {
		      f.read((char*)&s1,sizeof(danyuan));

		   }while(strcmp(s1.name,name)&&f.tellg()!=posend);
		   if(!strcmp(s1.name,name))
		   {
			   int i;
			   f.seekg(-long(sizeof(danyuan)),ios::cur);
			   long pos=f.tellg();
			   s2=s1;
			   cout<<"请输入要修改的元素(1.姓名,2.电话,3.QQ号):";
			   cin>>i;
			   while(i>3||i<1){cout<<"输入错误,请重新输入:"<<endl;cin>>i;}
			   cout<<"请输入改后的相关内容:";
			   {switch(i)
			   {
			   case 1:cin>>s2.name;break;
			   case 2:cin>>s2.phone;break;
			   case 3:cin>>s2.qq;break;
			   default:break;
			   }
			   f.seekp(pos,ios::beg);
			   f.write((char*)&s2,sizeof(danyuan));
			   }
			   
		   }
		   else cout<<"查无此人."<<endl;
}
void normal::showstatus(int i)
{
	if(i==0)cout<<"normal"<<endl;
	else cout<<"friend"<<endl;
}
void normal::shownorlist(fstream f)
{
	f.seekg(0,ios::end);
	posend=f.tellg();
    f.seekg(0,ios::beg);
	cout<<"姓名"<<"     "<<"电话"<<endl;

	do
	{
		f.read((char*)&s1,sizeof(danyuan));
		if(s1.name==""||!strcmp(s1.name,"wwwwwwww")||s1.sign==1)continue;
		else cout<<s1.name<<"  "<<s1.phone<<"  "<<endl;
	}
	while(f.tellg()!=posend);
	
}
void normal::chengetofri(fstream f)
{
	cout<<"请输入姓名:"<<endl;
	cin>>name;
	f.seekg(0,ios::end);
	posend=f.tellg();
    f.seekg(0,ios::beg);
	f.seekp(0,ios::beg);
	do
		   {
		      f.read((char*)&s1,sizeof(danyuan));

		   }while(strcmp(s1.name,name)&&f.tellg()!=posend);
		   if(!strcmp(s1.name,name))
		   {
			   f.seekg(-long(sizeof(danyuan)),ios::cur);
			   long pos=f.tellg();
			   s2=s1;
			   s2.sign=1;
			   f.seekp(pos,ios::beg);
			   f.write((char*)&s2,sizeof(danyuan));
		   }
		   else cout<<"查无此人."<<endl;
}
fri::fri()
{
	sign=1;
};
void fri::showfrilist(fstream f)
{
	f.seekg(0,ios::end);
	posend=f.tellg();
    f.seekg(0,ios::beg);
	cout<<"姓名"<<"     "<<"电话"<<endl;

	do
	{
		f.read((char*)&s1,sizeof(danyuan));
		if(s1.name==""||!strcmp(s1.name,"wwwwwwww")||s1.sign==0)continue;
		else cout<<s1.name<<"  "<<s1.phone<<"  "<<endl;
	}
	while(f.tellg()!=posend);
	
}
void fri::chengetonor(fstream f)
{
	f.seekg(-long(sizeof(danyuan)),ios::cur);
	cout<<"请输入姓名:"<<endl;
	cin>>name;
	f.seekg(0,ios::end);
	posend=f.tellg();
    f.seekg(0,ios::beg);
	f.seekp(0,ios::beg);
	do
		   {
		      f.read((char*)&s1,sizeof(danyuan));

		   }while(strcmp(s1.name,name)&&f.tellg()!=posend);
		   if(!strcmp(s1.name,name))
		   {
			   long pos=f.tellg();
			   s2=s1;
			   s2.sign=0;
			   f.seekp(pos,ios::beg);
			   f.write((char*)&s2,sizeof(danyuan));
		   }
		   else cout<<"查无此人."<<endl;
}