How do you write Not equals

[boomhower]

#2 or #6, either one works for me.

 

[Gillbot]

Usually != but people don't get it, perhaps it's time to start using ≠.

this

 

[LiuKangBakinPie]

In C expressions, you can assume that *, /, and % come before + and -. Put parentheses around everything else.

 

[Lemon law]

In my mind, this is somewhat a tempest in a tea pot thread, because human being easily understand the symbol providing they understand the symbol, thus effortlessly handling the concept of inequality. In the USA, I might expect the average 6 year child to understand what = means. But given all the various symbols for inequality, I might not make that same assumption at age 6.

Explaining it to a computer is much harder, and the more precisionion we use, the harder it is. For example if I use an integer has a data type in C, depending on the rounding methods used, 2.45 would be equal to 1.55. And at one time, I was calculating circle circle intersections, had the equations programmed in, and was debugging the program while using the long double data type for all calculations. And testing the tangent intersection at one and only one point. Ad long as I used say, one corcle of radius 1 centered at (0,0) and another circle centered at (3,0) of radius 2, the program returned the correct answerof one and only one point of intersection at (1,0). But as soon as I scaled the same easily solved problem mentally by multiplying up or down, by some fractional multiple, say, 1/2, the program always bombed. And a little debugging showed why. Given the equations I was using, the test for the tangent case, used a quadratic equation where the the test for exact tangent was given by the the square root of quantity B squared minus 4ac equaling exactly zero. But when the computer processed it, even using long doubles, debugging showed the computer making small calculation errors way out at the 18'th digit base 10. And for some reason the computer computed answer was always negative, as the program bombed because there is no solution for the square root of a negative number.

After that it was easy to write an error handler, and tell the computer if the difference between the numbers were less that 10 to the minus 17, assume they are equal.

 

[Locut0s]

I type != but write ≠

This. I think the later is the correct mathematical symbol and the former is from programming.

 

[fralexandr]

i type != for not equals, but i type ~= for roughly equals, or approximately equals D:

am i doing it wrong?

 

[dank69]

i type != for not equals, but i type ~= for roughly equals, or approximately equals D:

am i doing it wrong?

IMO yes. ~ is all that is needed for approximately.

 

[cronos]

mostly !=

sometimes <>

 

[LiuKangBakinPie]

Excel
Equals (=)
Less than (<)
Less than or equal to (<=)
Greater than (>)
Greater than or equal to (>=)
Not equal to (<>)

C#
== Equal
!= Not equal
> Greater than
>= Greater than or equal to
< Less than
<= Less than or equal to

Mathematical Symbols
&#8800; not equal
< less than
> greater than
&#8804; less than or equal to
&#8805; greater than or equal to

Matlab/Octave
~=

One of the oldest ones
<>

 

[Aikouka]

i type != for not equals, but i type ~= for roughly equals, or approximately equals D:

am i doing it wrong?

That's what I typically do since I've seen the tilde ('~') used often to denote approximations.

 

[Dr. Zaus]

Excel
Equals (=)
Less than (<)
Less than or equal to (<=)
Greater than (>)
Greater than or equal to (>=)
Not equal to (<>)

C#
== Equal
!= Not equal
> Greater than
>= Greater than or equal to
< Less than
<= Less than or equal to

Mathematical Symbols
&#8800; not equal
< less than
> greater than
&#8804; less than or equal to
&#8805; greater than or equal to

Matlab/Octave
~=

One of the oldest ones
<>

A~=~!=a

 

[Baked]

Like this fool <^>

 

[Joseph F]

!=

 

[MotF Bane]

I type != but write &#8800;

This.

 

[gevorg]

=! and sometimes ><

 

[Ichinisan]

I started with BASIC, so <> used to make sense. Haven't done BASIC in a long time, and I've grown to like != better anyway...because you can also do !(condition) for true/false (boolean) stuff.

 

[Dr. Zaus]

Technically speaking, the answer to the question is, within the context of computer use,:

 

[brianmanahan]

Usually != but people don't get it, perhaps it's time to start using &#8800;.

if people dont get it, then they're just stupid

 

[Locut0s]

if people dont get it, then they're just stupid

Or they simply have no experience with programming?

 

[shortylickens]

Correctly.

 

[brianmanahan]

Or they simply have no experience with programming?

exactly

 

[Locut0s]

exactly

So, people with no experience of programming are universally stupid? Got it.

 

[brianmanahan]

So, people with no experience of programming are universally stupid? Got it.

you said it, i didnt

return 0;

 

[Lummex]

I type != but write &#8800;

this

 

[lokiju]

<> which is what I use often when running queries to show everything but x.