Function calls without inputs

IDSTAT-3
TitleAdd empty parentheses to function calls without input arguments.
PriorityStrongly recommended
DescriptionAdd empty parentheses to function calls without input arguments. This helps to emphasize the fact that they are function calls and not variables or properties.
RationaleReadability

Avoid:

x = rand * 2;

Instead use:

x = rand() * 2;