From: francis.glassborow@btinternet.com   
      
   On 18/05/2012 02:04, Ike Naar wrote:   
   > On 2012-05-17, ravinder thakur  wrote:   
   >> I am kind of puzzled by one simple c++ constuct. What should be the   
   >> value of x after the statement:   
   >>   
   >> int x = 10;   
   >> x = x++;   
   >>   
   >> I expect value of x to be 10 after the second assignment, however its   
   >> coming out to be 11. Any ideas whats happening ?   
   >   
   > (Nit: there is no second assignment. The first line is not an   
   assignment).   
   >   
   > The value of x equals 10 before the assignment.   
   > If you want x to equal 10 after the assignment as well,   
   > then you actually want the assignment not to change x.   
   > So get rid of the assignment. Problem solved.   
   >   
   >   
      
   Not so:   
      
   void foo(int & i, int & j){   
        i=j++;   
   }   
      
   int main(){   
        int i{10};   
        foo(i, i);   
   // problem occurs   
   }   
      
      
   We cannot simply avoid problem code unless we understand why it is a   
   problem. And note that any reasonable compiler is going to inline foo()   
   resulting in EXACTLY the original code.   
      
   Francis   
      
      
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