How does C++ handle &&? (Short-circuit evaluation) [duplicate]

by

Yes, the && operator in C++ uses short-circuit evaluation so that if bool1 evaluates to false it doesn’t bother evaluating bool2.

“Short-circuit evaluation” is the fancy term that you want to Google and look for in indexes.

The same happens with the || operator, if bool1 evaluates to true then the whole expression will evaluate to true, without evaluating bool2.

In case you want to evaluate all expressions anyway you can use the & and | operators.

More Related Contents:

  1. Is short-circuiting logical operators mandated? And evaluation order?
  2. Is there actually a reason why overloaded && and || don’t short circuit?
  3. C++ short-circuiting of booleans
  4. Long condition C++ [closed]
  5. how to write makefile when two header files include eachother in c++? [duplicate]
  6. What is std::move(), and when should it be used?
  7. Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_u64 on Intel CPUs
  8. C++ obtaining milliseconds time on Linux — clock() doesn’t seem to work properly
  9. What is the partial ordering procedure in template deduction
  10. initialize a const array in a class initializer in C++
  11. Send and Receive a file in socket programming in Linux with C/C++ (GCC/G++)
  12. Conversion from string literal to char* is deprecated
  13. Should I learn C before learning C++? [closed]
  14. C++ pointer multi-inheritance fun
  15. Complex C declaration
  16. Is a wide character string literal starting with L like L”Hello World” guaranteed to be encoded in Unicode?
  17. C++11 “overloaded lambda” with variadic template and variable capture
  18. Why can I call base template class method from derived class
  19. fork() and pipes() in c
  20. Is there ever a need for a “do {…} while ( )” loop?
  21. How to truncate a file while it is open with fstream
  22. How can CString be passed to format string %s?
  23. Alpha rendering difference between OpenGL and WebGL
  24. Can I hint the optimizer by giving the range of an integer?
  25. If a 32-bit integer overflows, can we use a 40-bit structure instead of a 64-bit long one?
  26. std::enable_if : parameter vs template parameter
  27. What is the meaning of double curly braces initializing a C-struct?
  28. Threadsafe Vector class for C++
  29. What happen to pointers when vectors need more memory and realocate memory?
  30. glPixelStorei(GL_UNPACK_ALIGNMENT, 1) Disadvantages?

Leave a Comment