Explain results, plz

Question

https://code.sololearn.com/cniGDRsdqhvl/?ref=app

Answer 1

https://stackoverflow.com/questions/7594508/modulo-operator-with-negative-values

"... the binary % operator yields the remainder from the division of the first expression by the second ... if the quotient a/b is representable in the type of the result, (a/b)*b + a%b is equal to a... "

Rearranging the equation, a%b can be defined as

f(a,b) = a - (a/b)*b

For the case of a = -6 and b = 4,

f(-6,4) = -6 - (-6/4)*4

=> -6 - (-1)*4
= -6 + 4
= -2

Answer 2

Looks like C++ mods abs'ed numbers basically, hm?

Answer 3

f(6, -4) = 6 - (6/-4)* (-4) = 6 - 4 = 2

Answer 4

Hatsy Rei thanx