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How to type logical or

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GrahamShaw2008 GrahamShaw2008 is offline

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How to type logical or

Dec 12th, 2008

Where do I locate the logical or on my keyboard? Thanks for your help in advance.

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Narue

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Re: How to type logical or

Dec 12th, 2008

If you don't mean the logical OR operator in C, example follows, then you need to be more specific about what exactly you want to do.

 Help with Code Tags 
 c Syntax (Toggle Plain Text) 
#include <stdio.h>
 
int main ( void )
{
  if ( 0 || 1 ) /* || is the logical OR operator */
    puts ( "True" );
  else
    puts ( "False" );
 
  return 0;
}
#include <stdio.h>

int main ( void )
{
  if ( 0 || 1 ) /* || is the logical OR operator */
    puts ( "True" );
  else
    puts ( "False" );

  return 0;
}

Last edited by Narue; Dec 12th, 2008 at 9:24 am.

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GrahamShaw2008 GrahamShaw2008 is offline

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Re: How to type logical or

Dec 12th, 2008

Hi,

How do i type (||). In this case I used copy and paste. I cant find it on my keyboard.

Thanks

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gautam610

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Re: How to type logical or

Dec 12th, 2008

It's above the Enter key on your keyboard with '\' symbol.....................

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Narue

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Re: How to type logical or

Dec 12th, 2008

>I cant find it on my keyboard.
Oh dear. It's the vertical bar, placed as the shift value for my backslash key, but it could be somewhere else (or not present at all) depending on the keyboard. Note that the || operator is two vertical bars, not a single key on your keyboard. If you still can't find it, you may fall into the category of C programmers that need to take advantage of C's trigraph sequences:

 Help with Code Tags 
 c Syntax (Toggle Plain Text) 
#include <stdio.h>
 
int main ( void )
{
  if ( 0 ??!??! 1 )
    puts ( "True" );
  else
    puts ( "False" );
 
  return 0;
}
#include <stdio.h>

int main ( void )
{
  if ( 0 ??!??! 1 )
    puts ( "True" );
  else
    puts ( "False" );

  return 0;
}

This does the same thing as my first example, except the ??! trigraph represents the vertical bar with a combination of universal characters. Here are all of the trigraphs if you discover you're missing other keys:

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
??>    }
??<    {
??)    ]
??(    [
??=    #
??!    |
??/    \
??'    ^
??-    ~
 
??>    }
??<    {
??)    ]
??(    [
??=    #
??!    |
??/    \
??'    ^
??-    ~

Before you use them, make absolutely sure that they're necessary, as trigraphs are clearly very detrimental to the readability of your code.