class - c++ declaring a variable when passing it into a function -


I have come from the world of C # which is doing something like it is allowed. When I try in C ++, I do not get any compiler errors, but I'm not sure it's actually working.

So more experienced people are allowed to do this: 

  unit-> gt; Setpozzi (vector 2 (200, 400));   
 As Vector 2 has a square and the condition of the set requires a vector parameter? Is this permission or I need to pre-start the variable like this:  
  vector 2 aquacare (200, 400); Entity-> SetPosition (aVector); Thanksgiving   Vector 2 (200, 400));   
 OK  (and better)  If you have defined  SetPosition  as one of the following:  < Pre>  zero set (vector 2 constant and v); // OK: const reference zero setPosition (vector 2V); // OK: value   
 is such, accepting the  setposition  argument as  const   context  , Or just as  value .  
 This will not work though:  
  Zero Setposi (vector 2 and v); // is not ok: non-constitutional reference   
 -  
 In C +11, you can write it  (provided you have  vector 2  to) :  
  unit-> setposition ({200, 400});   
 Thanks for @Simon to indicate this.

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