Binary to Dec Source Code

This is a discussion on Binary to Dec Source Code within the C++ Programming forums, part of the General Programming Boards category; Code: #include <iostream> #include <fstream> #include <conio.h> #include <stdlib.h> using namespace std; class binAndDec { public: int loadFromFile(char File[10]); void ...

  1. #1
    Student drdroid's Avatar
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    Question Binary to Dec Source Code

    Code:
    #include <iostream>
    #include <fstream>
    
    #include <conio.h>
    #include <stdlib.h>
    
    using namespace std;
    
    class binAndDec
    {
    	public:
    
    		int loadFromFile(char File[10]);
    		void binToDec();
    
    		char textString[6];
    		char Copy[6];
    		int n;
    };
    
    int binAndDec::loadFromFile(char File[10])
    {
    	char text;
    
    	ifstream tFile(File);
    	tFile.get(textString);
    	tFile.close();
    
    
    
    	if(textString==0)
    	{
    		cout << "NULL File!" << endl;
    		return 1;
    	}
    	return 0;
    }
    
    void binAndDec::binToDec()
    {
    	for(int tmp=0;tmp<6;tmp++)
    	{
    		Copy[tmp]=textString[tmp];
    	}
    	n=0;
    
        for (int x=0; Copy[x] != '\0' && (Copy[x] == '1' || Copy[x] == '0'); x++)
        {
            n <<= 1;  
            if (Copy[x]== '1')
    		{
                n += 1;
    		}
        }
    }
    
    
    int main()
    {
    	binAndDec mains;
    	if(mains.loadFromFile("text.txt")==1)
    	{
    		return 1;
    	}
    	else
    	{
    		mains.binToDec();
    		cout << (char)mains.n << endl;
    	}
    	getch();
    	return 0;
    }
    My question is what's wrong when I use the get function? I'm going to set it up to load more than one string of binary. Any ideas?

  2. #2
    mustang benny bennyandthejets's Avatar
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    My question is what's wrong when I use the get function?
    Why don't you tell us? What are the errors?
    benforbes@optusnet.com.au
    Microsoft Visual Studio .NET 2003 Enterprise Architect
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  3. #3
    Student drdroid's Avatar
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    sry...

    sry, I was a little tired last night.

    Code:
    D:\Programs\Projects\hex\main.cpp(27) : error C2664: 'class std::basic_istream<char,struct std::char_traits<char> > &__thiscall std::basic_istream<char,struct std::char_traits<char> >::get(char &)' : cannot convert parameter 1 from 'char [6]' to 'ch
    ar &'
    that's pointing at the use of get.

  4. #4
    S Sang-drax's Avatar
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    You cannot use get() to read a string of characters, only single characters.
    Use getline() or the >> operator to read a string
    Last edited by Sang-drax : Tomorrow at 02:21 AM. Reason: Time travelling

  5. #5
    Student drdroid's Avatar
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    ...

    well, getline seeems to be undefined... what library do I need for that... I thought it was stdio.h but it still doesn't work then.

  6. #6
    Student drdroid's Avatar
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    ...

    What do I use to include getline?
    Is there anything else I can use if that isn't in my library?

  7. #7
    Registered User subdene's Avatar
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    getline() is included in iostream.h. So i can't understand the problem you are having.
    Be a leader and not a follower.

  8. #8
    C++ Developer XSquared's Avatar
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    getline( ) is actually in iostream. Not iostream.h.
    Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah

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  9. #9
    Student drdroid's Avatar
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    ...

    I get an unideclared identifyer for getline. Anyone wanna show me how it's used?

  10. #10
    Registered User subdene's Avatar
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    sounds like you are passing a variable name that hasn't been declared previously in your code. And xsquared: i know the declaration of getline is within the iostream.h file, and not the actual object code its self.
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  11. #11
    Student drdroid's Avatar
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    ...

    no, it's saying that getline is undeclared.

    [copy]
    D:\Programs\Projects\hex\main.cpp(26) : error C2065: 'getline' : undeclared identifier
    [/copy]

    Isn't that what this means?

  12. #12
    C++ Developer XSquared's Avatar
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    Actually, what I meant is that you should never use <iostream.h>, just <iostream>.
    Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah

    You. Fetch me my copy of the Wall Street Journal. You two, fight to the death - Stewie

  13. #13
    Registered User subdene's Avatar
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    can you post the code so i can have a quick look at it?
    Be a leader and not a follower.

  14. #14
    Student drdroid's Avatar
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    Code:
    #include <iostream>
    #include <fstream>
    
    #include <conio.h>
    #include <stdlib.h>
    
    using namespace std;
    
    class binAndDec
    {
    	public:
    
    		int loadFromFile(char File[10]);
    		void binToDec();
    
    		char textString[6];
    		char Copy[6];
    		int n;
    };
    
    int binAndDec::loadFromFile(char File[10])
    {
    	char text;
    
    	ifstream tFile(File);
    	tFile >> text;
    	getline(text);
                        //I've also tried just doing a direct getline(tFile)
    	tFile.close();
    
    
    
    	if(textString==0)
    	{
    		cout << "NULL File!" << endl;
    		return 1;
    	}
    	return 0;
    }
    
    void binAndDec::binToDec()
    {
    	for(int tmp=0;tmp<6;tmp++)
    	{
    		Copy[tmp]=textString[tmp];
    	}
    	n=0;
    
        for (int x=0; Copy[x] != '\0' && (Copy[x] == '1' || Copy[x] == '0'); x++)
        {
            n <<= 1;  
            if (Copy[x]== '1')
    		{
                n += 1;
    		}
        }
    }
    
    
    int main()
    {
    	binAndDec mains;
    	if(mains.loadFromFile("text.txt")==1)
    	{
    		return 1;
    	}
    	else
    	{
    		mains.binToDec();
    		cout << (char)mains.n << endl;
    	}
    	getch();
    	return 0;
    }

  15. #15
    Registered User subdene's Avatar
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    you have to pass in the number of bytes you want getline to read. Additionally, you also need to call the method from the ifstream object, so it knows to read from the file stream associated with the file and not the stdin filestream.

    so try,

    infile.getline(data, 80);
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