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Old Oct 26th, 2005, 11:10 AM   #1
Cache
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problem w/ cin.getline?
Hi,

I am having a problem with cin.getline in function "getattrib()" in the program below.

I would have only posted the function getattrib() but I have noticed the function works fine when copied and compiled in another program, so I'm not sure what part of my code makes the function not work as intended.
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#include <cstdlib>
#include <iostream>
#include <string>
#include <fstream>
#include <vector>

using namespace std;

struct movie_info 
	   {
	   char title[70];
	   char runtime[70];
	   char quality[70];
	   char codec[70];
	   } movie;

string printmain (void);
string printcategorie (void);
movie_info getattrib (void);
string existingchoice (void);   
 
int main(int argc, char *argv[])
{
	while (1) {
		  string answer1return;
		  answer1return = printmain();
		  
		  if (answer1return == "1") 
		  {
			 string answer2return;
			 answer2return = printcategorie();
						 
			 if (answer2return == "1") 
			 {
				while (1){
				movie = getattrib();
											 
				vector<string> readfile;
				string putfile;
	
			    ifstream Actionstreamin("Action.mdb");
			    while (getline(Actionstreamin, putfile))
				{
					 readfile.push_back(putfile + "\n");
				} 
				
				Actionstreamin.close();
	
				readfile.push_back("\nTitle: ");
				readfile.push_back(movie.title);
				readfile.push_back("\nRuntime: ");
				readfile.push_back(movie.runtime);
				readfile.push_back("\nQuality: ");
				readfile.push_back(movie.quality);
				readfile.push_back("\nCodec: ");
				readfile.push_back(movie.codec);
			 readfile.push_back("\n\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\n");
		 								 
				ofstream Actionstream("Action.mdb");
				if (Actionstream.is_open()) 
				{
				 for (int i=0; i < readfile.size(); i++)
				 Actionstream << readfile[i];
				   Actionstream.close();
				 cout << "\n" << "New Entry Successfully Added" << endl;
				   system("PAUSE");
				   break;
				} else if (! Actionstream.is_open()) 
				{
					 cout << "\n\nError opening file" << endl;
					 system("PAUSE");
					 exit(1);
				}
					   } 
			  } else if (answer2return == "2") 
			  {
					 while (1){
					 movie = getattrib();
											 
					 vector<string> readfile;
					 string putfile;
	
					 ifstream Adventure("Adventure.mdb");
					 while (getline(Adventure, putfile))
					 {
						 readfile.push_back(putfile);
					 } Adventure.close();
	
					 
					 readfile.push_back("\nTitle: ");
					 readfile.push_back(movie.title);
					 readfile.push_back("\nRuntime: ");
					 readfile.push_back(movie.runtime);
					 readfile.push_back("\nQuality: ");
					 readfile.push_back(movie.quality);
					 readfile.push_back("\nCodec: ");
					 readfile.push_back(movie.codec);
					 readfile.push_back("\n\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\n");
		 							 
					 ofstream Adventurestream ("Adventure.mdb");
					 if (Adventurestream.is_open()) 
					 {
					 for (int i=0; i < readfile.size(); i++)
					 Adventurestream << readfile[i];
					 Adventurestream.close();
					 cout << "\n" << "New Entry Successfully Added" << endl;
					 system("PAUSE");
					 break;
					 } else if (! Adventurestream.is_open()) 
							 {
								 cout << "\n\nError opening file" << endl;
								 system("PAUSE");
								 exit(1);
							 }
							 }
			  } else if (answer2return == "3") 
			  {  
				 while (1)
				 {
					 movie = getattrib();
											 
					 vector<string> readfile;
					 string putfile;
	
					 ifstream Comedystreamin("Comedy.mdb");
					 while (getline(Comedystreamin, putfile))
					   {
							 readfile.push_back(putfile);
					 } Comedystreamin.close();
	
											 
					 readfile.push_back("\nTitle: ");
					 readfile.push_back(movie.title);
					 readfile.push_back("\nRuntime: ");
					 readfile.push_back(movie.runtime);
					 readfile.push_back("\nQuality: ");
					 readfile.push_back(movie.quality);
					 readfile.push_back("\nCodec: ");
					 readfile.push_back(movie.codec);
					 readfile.push_back("\n\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\n");
		 							 
					 ofstream Comedystream ("Comedy.mdb");
					 if (Comedystream.is_open()) 
					   {
						 for (int i=0; i < readfile.size(); i++)
						 Comedystream << readfile[i];
						 Comedystream.close();
						 cout << "\n" << "New Entry Successfully Added" << endl;
						 system("PAUSE");
						 break;
					 } else if (! Comedystream.is_open()) 
								 {
								 cout << "\n\nError opening file" << endl;
								 system("PAUSE");
								 exit(1);
								 }
				 } 
			  } else if (answer2return == "4") 
			  {
				while (1)
				{
					 movie = getattrib();
											 
					 vector<string> readfile;
					 string putfile;
	
					 ifstream Kidsstreamin("Kids.mdb");
					 while (getline(Kidsstreamin, putfile))
					  {
						 readfile.push_back(putfile);
					 } Kidsstreamin.close();
	
					  
					 readfile.push_back("\nTitle: ");
					 readfile.push_back(movie.title);
					 readfile.push_back("\nRuntime: ");
					 readfile.push_back(movie.runtime);
					 readfile.push_back("\nQuality: ");
					 readfile.push_back(movie.quality);
					 readfile.push_back("\nCodec: ");
					 readfile.push_back(movie.codec);
					 readfile.push_back("\n\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\n");
		 							 
					 ofstream Kidsstream ("Kids.mdb");
					 if (Kidsstream.is_open()) 
					  {
						 for (int i=0; i < readfile.size(); i++)
						 Kidsstream << readfile[i];
						 Kidsstream.close();
						 cout << "\n" << "New Entry Successfully Added" << endl;
						 system("PAUSE");
						 break;
					 } else if (! Kidsstream.is_open()) 
					  {
							 cout << "\n\nError opening file" << endl;
							 system("PAUSE");
							 exit(1);
					  }
				}	 
			 }
		   } else if (answer1return == "2") 
		   {
				string answer3return;
				answer3return = printcategorie();
				
				if (answer3return == "1") 
				{
				   while (1) 
				   {
						 vector<string> readfile;
						 string existingmovie;
		 												 
						 ifstream premovie ("Action.mdb");
						 while (getline(premovie, existingmovie)) 
						 {
							 readfile.push_back(existingmovie + "\n");
						 } 
						 
						 premovie.close();
						 
						 cout << "\nAction Movies:" << "\n" << "\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4" << endl;
						 for (int i=0; i < readfile.size(); i++)
						 cout << readfile[i];
						 system("PAUSE");
						 break;
				   }
				} else if (answer3return == "2")
				{
				  while (1) 
				  {
					 vector<string> readfile;
					 string existingmovie;
		 												 
					 ifstream premovie ("Adventure.mdb");
					 while (getline(premovie, existingmovie)) 
					    {
					 readfile.push_back(existingmovie + "\n");
					    } 
					    
					 premovie.close();
		 	 														 
					 cout << "\nAdventure Movies:" << "\n" << "\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4" << endl;
					 for (int i=0; i < readfile.size(); i++)
					 cout << readfile[i];
					 system("PAUSE");
					 break;
				  }
															 
				} else if (answer3return == "3")
				{
				  while (1) 
				  {
					 vector<string> readfile;
					 string existingmovie;
		 												 
					 ifstream premovie ("Comedy.mdb");
					 while (getline(premovie, existingmovie)) 
					    {
							 readfile.push_back(existingmovie + "\n");
					    } 
					    
					 premovie.close();
		 	 														 
					 cout << "\nComedy Movies:" << "\n" << "\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4" << endl;
					 for (int i=0; i < readfile.size(); i++)
					 cout << readfile[i];
					 system("PAUSE");
					 break;
				  }
				} else if (answer3return == "4")
				{
				  while (1) 
				  {
					 vector<string> readfile;
					 string existingmovie;
		 												 
					 ifstream premovie ("Kids.mdb");
					 while (getline(premovie, existingmovie)) 
					    {
							 readfile.push_back(existingmovie + "\n");
					    } 
					    
					 premovie.close();
		 	 														 
					 cout << "\nKids Movies:" << "\n" << "\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4\xC4" << endl;
					 for (int i=0; i < readfile.size(); i++)
					 cout << readfile[i];
					 system("PAUSE");
					 break;
				  }
															 
				} else {
						 cout << "\n" << "ERROR: " << answer3return << " is not an option." << endl;
						 system("PAUSE");
					   } 
		   } else if (answer1return == "3") 
		   { 
			 break; 
		   } else {
					 cout << "\n" << "ERROR: " << answer1return << " is not an option." << endl;
					 system("PAUSE");
				  }
		  }
	return EXIT_SUCCESS;
}


string printmain (void) {
	   system("CLS");
	 cout << "					 \xC9\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xBB" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xBA		 Movie Database		 \xBA" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xCC\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xB9" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xBA Choose from the folowing options \xBA" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xBA 1: Add New Entry To Database	 \xBA" << endl;
	 cout << "					 \xBA 2: View Existing Database Entries\xBA" << endl;
	 cout << "					 \xBA 3: Exit Program				 \xBA" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xC8\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xBC" << endl;
	   cout << "\n\nChoice:";
	   string answer1;
	   cin >> (answer1);
	   return (answer1);
	   }
	   
	 
string printcategorie (void) {
	   system("CLS");
	 cout << "					 \xC9\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xBB" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xBA		 Movie Database		 \xBA" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xCC\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xB9" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xBA	 Please select a category	\xBA" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xBA 1: Action					 \xBA" << endl;
	 cout << "					 \xBA 2: Adventure					 \xBA" << endl;
	 cout << "					 \xBA 3: Comedy					 \xBA" << endl;
	 cout << "					 \xBA 4: Kids						 \xBA" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xC8\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xBC" << endl;
	   cout << "\n\nChoice:";
	   string answer2;
	   cin >> (answer2);
	   return (answer2);
	   }
	   
movie_info getattrib (void) {
	   system("CLS");
	 cout << "					 \xC9\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xBB" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xBA		 Movie Database		 \xBA" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xCC\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xB9" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xBA Next input the movies details \xBA" << endl;
	 cout << "					 \xBA								 \xBA" << endl;
	 cout << "					 \xC8\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xBC" << endl;
	   cout << "\n\nTitle:"; 
	   cin.getline(movie.title,70); //This line seems to be skipped when the program executes
	   cout << "\nRuntime:"; 	
	   cin.getline(movie.runtime,70);
	   cout << "\nQuality:";
	   cin.getline(movie.quality,70);
	   cout << "\nRequired Codec:";
	   cin.getline(movie.codec,70);
	   return (movie);
	   }

What the function getattrib() should do is ask for and then store user input into a movie_info structure (movie), then return movie. The problem I'm gettins is during execution, when in the function getattrib() the line "cin.getline(movie.title,70);" seems to act as if data has already been passed to "movie.title" and so appears to get skipped.

Here is a picture of the problem when the program is run, just incase my description is no good:
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Old Oct 26th, 2005, 11:17 AM   #2
Polyphemus_
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maybe there is something left in the stream.. try flushing it.
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Old Oct 26th, 2005, 11:26 AM   #3
Cache
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Quote:
Originally Posted by Polyphemus_
maybe there is something left in the stream.. try flushing it.
OK, can you tell me how to flush the stream please.

EDIT: I just tried "cout.flush()" and "cout << flush;" neither resolved the problem. Was that what you meant by "flushing it"?
Last edited by Cache; Oct 26th, 2005 at 11:41 AM.
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Old Oct 26th, 2005, 12:48 PM   #4
DaWei
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Use cin.sync () before you ask for input. I haven't looked at your code, so if that doesn't work, post back. Be sure and check the streams for error after each operation. They don't promise to always work, they just promise to tell you if they don't.
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Old Oct 26th, 2005, 1:07 PM   #5
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Quote:
Originally Posted by DaWei
Use cin.sync () before you ask for input.
cin.sync () worked, problem solved!

This is something I can note for future programs too. Thanks.
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