Character Limit Controller in Consol Application

Question

1.00/5 (1 vote)

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This method i already wrote, have a problem, Spaces are everywhere if user don't full all characters of strings,what should i do ?

C++

string CharacterLimitController(int limit)
{
	int count =0;
	char c;
	string A;
    A.resize(limit,' ');
	do
	{
	    c=getch();
		if(c==8)
		{
			if(count >0)
			{
			    cout <<"\b \b"; 
		   	    count -=1;
			}
			continue;
		}
		if(count==limit)
		{
			count -=1;
		    cout<<"\b";
		}
		if(c==13)
			break;
	    A[count]=c;
		cout << c;
	    count ++;
	}
	while(count!=limit+1);
       
    

	return A;
}

Posted 26-Dec-12 1:43am

Ali Zandian

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Sergey Alexandrovich Kryukov 26-Dec-12 18:27pm

What are you trying to achieve, exactly? What is "full a character"?
—SA

3 solutions

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Mohibur Rashid · Accepted Answer · 2012-12-26T13:16:00

Solution 1

use a null character when user finish inputting. null character is zero

Posted 26-Dec-12 13:16pm

Mohibur Rashid

Jibesh · Accepted Answer · 2012-12-26T16:08:00

Solution 2

If you dont want to fill your output string with any additional char remove the line

C++

A.resize(limit,' ');

this method instructs to fill the empty spaces in the string empty space. see more about string.resizehere[^]

Posted 26-Dec-12 16:08pm

Jibesh

Philippe Mori · Accepted Answer · 2012-12-26T16:38:00

If you want to remove spaces at both ends, it is probably simpler to trim the string once the user get out of the loop.

Alternatively, you might not fill the string with space at the beginning but add one character to the end of the string as appropriate and when the user press backspace remove last character.

Given that you already keep the count, the following might be what you want:

C++

return A.substr(0, count);