C Interview Questions and Answers

 

People claim that optimizing compilers are good and that we no longer have to write things in assembler for speed

People claim that optimizing compilers are good and that we no longer have to write
things in assembler for speed, but my compiler can't even replace i/=2 with
a shift.





Was i signed or unsigned? If it was signed, a shift is not equivalent (hint: think
about the result if i is negative and odd), so the compiler was correct not to use
it.

Posted by:Richards