Escriviu una funció que retorni el valor absolut d’un enter @n@.
Interfície
C++
int absolute(int n);
C
int absolute(int n);
Java
publicstaticintabsolute(int n);
Haskell
absolute ::Int->Int
Python
absolute(n) # returns int
absolute(n: int) ->int
Observació
Només cal enviar el procediment demanat; el programa principal serà
ignorat.
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