Another Question!

[DjGazUK]

I'm still not clear what this means:

"Explain why pow(4,1/2) gives 1.0, but pow(4,0.5) gives 2.0 where pow(x,y) is the library function that calculates xy."

I know that the second argument of pow( 4, 1/2 ) is not "one-half". It is 1 divided by 2. That is not the same as 0.5 since the compiler sees 1 as an integer and 1.0 as a float. So in C, 1.0 / 2.0 == 0.5, but 1 / 2 == 0.

Yeah I understand all the above.....It's the bit about the lirary function I don't uderstand?
Can anyone explain this to me?
Cheers.
Gaz.

[Salem]

The library function has nothing to do with it - you need to look into the properties of integer division

[Govtcheez]

C, as a language, is pretty flexible. There's a variant of C for pretty much every chip or OS out there. To accomplish this without changing the base language, there are many libraries that are used with it. These include things like stdio (for input and output), libs for file i/o, and math.h (where pow is from)

[Nutshell]

does 0.5 equals 0 ?

[Uzma Hameed]

Friend you know
when an integer is divided by an integet it result an integer. it skip the part after decimal so when 1 is divide by 2 it result 0.5 so
5 is skipped after the decimal and u get 0 and any thing raised to power 0 is 1 . that is the answer