Thread: Help! Looping problem.

Why didn't I think about it like this earlier?

Now I need to think on how to make a bar graph.

Code:

//User input poll of "Do you like _______ ?"


//3 possible poll responds; r1, r2, r3.


#include <iostream>;
#include <string>;


using namespace std;


int main()
{   //question
	string poll;
	//answers
	


	string respond;
	


    cout << "NOTE: There are only 3 possibles answers to this poll:\n";
	cout << "1.yes.\n";
	cout << "2.no. \n";
	cout << "3.no idea \n";


	cout << "Press the answer's number and then ENTER to add poll.\n";
	cout << "Example: press 1 to answer yes.\n";


	cout << "To end poll, press 0 until the output to asks for vote ends.\n";


	cout << "What would you like to ask? (Type below) \n\n";
	getline(cin, poll);


	cout << "\n\n\n";


	cout << "Now each person press either 1,2, or 3 to vote.\n";
	cout << "Once vote has complete, press 0 to exit poll and look at resulting bar graph.\n";
	cout << "\n\n";
	
	while ( respond != "0" )


	{
		cin >> respond;


		if ( respond != "1" && respond != "2" && respond != "3" && respond != "0" )
		{ cout << "Invalid choice. Choices: 1 (yes), 2: (no), 3 (no idea) and 0 (exit poll).\n"; }


	}


	






	  




	 


	system("pause");
	return 0;
}

On searching, I found out that I need array (some kind of memory?) to hold back the numbers to be presented on the graph. I haven't learn this.

Can I just "draw" a graph using loops?
If so, how do I collect the numbers of votes??

For example the input is like;

1
1
2
2

This indicates that 2 vote for yes and another 2 vote for no. But how do I collect the number of yes and no to produce an output of bar graph?

Code:

//User input poll of "Do you like _______ ?"


//3 possible poll responds; r1, r2, r3.


#include <iostream>;
#include <string>;


using namespace std;
  
   string respond;


int main()
{   //question
    string poll;
    //answers
    


    string respond;
    


    cout << "NOTE: There are only 3 possibles answers to this poll:\n";
    cout << "1.yes.\n";
    cout << "2.no. \n";
    cout << "3.no idea \n";


    cout << "Press the answer's number and then ENTER to add poll.\n";
    cout << "Example: press 1 to answer yes.\n";


    cout << "To end poll, press 0 until the output to asks for vote ends.\n";


    cout << "What would you like to ask? (Type below) \n\n";
    getline(cin, poll);


    cout << "\n\n\n";


    cout << "Now each person press either 1,2, or 3 to vote.\n";
    cout << "Once vote has complete, press 0 to exit poll and look at resulting bar graph.\n";
    cout << "\n\n";
    
    
    //people press 1 2 or 3 to vote.
    
    while ( respond != "0" )


    {
        cin >> respond;


        if ( respond != "1" && respond != "2" && respond != "3" && respond != "0" )
        { cout << "Invalid choice. Choices: 1 (yes), 2: (no), 3 (no idea) and 0 (exit poll).\n"; }


    


    }


    //add vertical "bar" for 'yes'.
    if  ( respond == "1" )
    {
        for ( int y = 1; y <2 ; y++)
        { cout << '\t' << y <<'\n'; }


    }


    
        
    
    


    




      




     


    system("pause");
    return 0;
}

I can't seem to make a vertical "bar". Why?

After the while loop finishes (by pressing 0), the program just says 'press any key to continue', instead of creating a vertical "bar" like I intended to do.

Sorry this code is wrong, but still, it isn't printed out after the while loop.

Code:

 //add vertical "bar" for 'yes'.
    if  ( respond == "1" )
    {
        for ( int y = 1; y <2 ; y++)
        { cout << '\t' << y <<'\n'; }


    }

Finally!! After long hours of thoughts and search! I think I grasped the idea of loops. Here's the code, AND I do hope I'm not over-confident about setting it right this time.

Code:

//User input poll of "Do you like _______ ?"


//3 possible poll responds; r1, r2, r3.


#include <iostream>;
#include <string>;
#include <sstream>;


using namespace std;
  
   string respond;
   int a = 0; //count yes
   int b = 0; //count no
   int c = 0; //count no idea


int main()
{   //question
	string poll;
	//answers
	
	
	
	string choice;


    cout << "NOTE: There are only 3 possibles answers to this poll:\n";
	cout << "1.yes.\n";
	cout << "2.no. \n";
	cout << "3.no idea \n";


	cout << "Press the answer's number and then ENTER to add poll.\n";
	cout << "Example: press 1 to answer yes.\n";


	cout << "To end poll, press 0 until the output to asks for vote ends.\n";


	cout << "What would you like to ask? (Type below) \n\n";
	getline(cin, poll);


	cout << "\n\n\n";


	cout << "Now each person press either 1,2, or 3 to vote.\n";
	cout << "Once vote has complete, press 0 to exit poll and look at resulting bar graph.\n";
	cout << "\n\n";
	
	
	//people press 1 2 or 3 to vote.
	
	 cout << "Choice ( 1, 2 or 3) : \n";




	 while ( choice != "0" ) 


	 {
		 getline (cin,choice); 
		 cout << '\n';


		
			  //vote yes
			 for (; choice == "1"; ++a ) //++a is the count of votes for yes
			
			 { 
			   cout << "voted yes.\n";
			   a = ++a;
			   break;
			 }


			 //vote  no.
			 for (; choice == "2"; ++b ) //++b is the count of votes for no
			 
			 { 
			   cout << "voted no. \n";
			   b = ++b;
			   break;
			 }


			 //vote no idea.
			 for (; choice == "3"; ++c)  // ++c is the count of votes for no idea
			
			 { 
			   cout << "voted no idea. \n";
			   c = ++c;
			   break;
			 }
			 
			  




	 }


	 for (int i = 0; i < a; ++i)
	                
	 { cout << "*" << '\n'; }   


	 for (int j = 0; j < b; ++j)


	 { cout << '\t' << "*" << '\n'; }


	 for (int k = 0; k < c; ++k)


	 { cout << '\t' << '\t' << "*" << '\n';  }




	


	
    system("pause");
	return 0;
}

1 2 3
One thing though, how do you align the asteriks like this.. * * *?
* * *
* *
*