refs::refs()
	 {
		 next=NULL;
		 first=last=NULL;
 
		 f.open("refs.txt", ios::in|ios::out|ios::app|ios::binary);
		 cout<<"\nEnter the properties of the document in the following order : "<<endl;
 
	cout<<"\n\t Code: "<<endl;
	cin>>code;
	int l=strlen(code);
	f<<"\n";
	f.write((unsigned char*)code,l);
	f<<"\t";
 
	cout<<"\n\t Title: "<<endl;
	cin>>title;
	int l1=strlen(title);
	f.write((unsigned char*)title,l1);
	f<<"\t";
 
}

void refs::search()
{
 char cd[6];
 char ttl[40];
 char cr[40];
 char lc[100]; 
 char fn[60];
 char kw[40];
 char cm[255];
 
 char s;
 while(1)
 {
  cout<<"\n\nPlease determine how you want to search :";
  cout<<"\nTo search by   Code   press 'c'\nTo search by   Title   press 't'\nTo search by   Creator   press 'r'";
  cout <<"\nTo search by   Location   press 'l'\nTo search by  file name   press 'n'\n";
  cout <<"To search by   Keyword   press 'k'\nTo search by   Comment   press 'm'\n"<<endl;
 
  cin>>s;
 
  char str[200];
 
refs *ptr;
ptr=first;
while(ptr){
 switch(s)
  {
  case 'c':
	  {
		  cout<<"\nPlease enter the Code you want to search for: "<<endl;
		  cin>>cd; 		 
	      int len=strlen(cd);
 
	    for(int ii=0; ii<len ;ii++)
		{  if(ptr->code[ii]==cd[ii])
			 {
               cout<<endl<<"*****Code found in the list .\n";
               cout<<endl<<"**************************";
	           cout<<"Here is the full information of the document: "<<endl;
               cout<<"\n\tCode :"<<ptr->code<<"\n \tTitle : "<<ptr->title<<"\n\tCreator : "<<ptr->creator;
	           cout<<"\n\tLocation :"<<ptr->location<<"\n \tFile Name : "<<ptr->filename<<"\n\tKeyword : "<<ptr->keyword;
	           cout<<"\n\tComment "<<ptr->comment;
 
               cout<<endl<<"**************************";
               break;
			 } 
		ptr=ptr->next; 
		}
		while (f.getline(str,120))
			{
			 int lenn=strlen(str);
			 for(int j=0;j<lenn;j++)
					if(cd[j]==str[j])
					{
						cout<<endl<<"*****Code found in the list .\n";
                        cout<<endl<<"**************************";
	                    cout<<"Here is the full information of the document: "<<endl;
                        cout<<"\n\tCode :"<<ptr->code<<"\n \tTitle : "<<ptr->title<<"\n\tCreator : "<<ptr->creator;
	                    cout<<"\n\tLocation :"<<ptr->location<<"\n \tFile Name : "<<ptr->filename<<"\n\tKeyword : "<<ptr->keyword;
	                    cout<<"\n\tComment "<<ptr->comment;
 
               cout<<endl<<"**************************";
               break;
					} 
			}
	}
 break;
.
.
.
.

ifstream myFile; //assuming you have named your input stream myFile
myFile.open("file.txt");
 
struct myStruct{
    string data_one;
    string data_two;
    myStruct* link;
}
 
typedef myStruct *myPtr;
myPtr head=NULL;
myPtr tmp;
string file_data_one, file_data_two,tmp_str;
while(!myFile.eof())
{
            myFile >>file_data_one;
            getline(myFile, file_data_one);
            tmp_str=file_data_one.substr(file_data_one.find(' ')+1,20); //gets the next 20 integers after the whitespace.
            istringstream cin(tmp_str); 
            cin>>file_data_two; // converts the string "tmp_num" to the integer type and inputs it in num
            tmp = new myStruct;
            tmp -> data_one = file_data_one;
            tmp -> data_two=file_data_two;
            tmp -> link=head;
            head=tmp;
}
myfile.close();