<< Proc | Index | RegularExpression >>
x%
is called 'remainder operator', which calculates 'residual number' by division. For example,
10%3 becomes 1, because 3 x 3 + '1' =10 5%3 becomes 2, because 3 x 1 + '2' = 5 7%2 becomes 1, because 2 x 3 + '1' = 7
Generally, 'x%2==0' is used to take 'even number'.