Order of calculation

[Aleksandar0110]

Write your question here.
I am wondering by which order the computer makes computations. For example in this expression:

  a*b*(x+y)*c;

, what will be calculated first? a*b or x+y ?

[MiiNiPaa]

what will be calculated first?

unspecified. Compiler can calculate either first.

Usually it depends on which order of calculations will be more effective.