Short circuit evaluation and side effects [duplicate]

by

Is it guaranteed that subsequent comparisons (c == SOMETHING in this example) uses value set by canInitWithSomeValue(&c)?

Yes. Because there is a sequence point

Between evaluation of the left and right operands of the && (logical AND), || (logical OR), and comma operators. For example, in the expression *p++ != 0 && *q++ != 0, all side effects of the sub-expression *p++ != 0 are completed before any attempt to access q.

A sequence point defines any point in a computer program’s execution at which it is guaranteed that all side effects of previous evaluations will have been performed, and no side effects from subsequent evaluations have yet been performed.

More Related Contents:

  1. What is the "–>" operator in C/C++?
  2. I’m getting an error when compiling my code. expected expression before ‘>=’ token [closed]
  3. Single function call to printf without using if statements? [closed]
  4. warning: suggest parentheses around assignment used as truth value [closed]
  5. How should character arrays be used as strings?
  6. C non-blocking keyboard input
  7. How can I get the size of an array from a pointer in C?
  8. When are anonymous structs and unions useful in C11?
  9. Find most significant bit (left-most) that is set in a bit array
  10. How can I compare strings in C using a `switch` statement?
  11. Reading command line parameters
  12. Reading the whole text file into a char array in C
  13. Embedding binary blobs using gcc mingw
  14. Which ordering of nested loops for iterating over a 2D array is more efficient [duplicate]
  15. Turn a simple socket into an SSL socket
  16. Poster with the 8 phases of translation in the C language
  17. Initialize/reset struct to zero/null
  18. Unspecified, undefined and implementation defined behavior WIKI for C
  19. Getting max value in a __m128i vector with SSE?
  20. Does Microsoft visual studio 2010 support c99?
  21. When is an array name or a function name ‘converted’ into a pointer ? (in C)
  22. How to calculate size of array from pointer variable?
  23. Process Linkage Table and Global Offset Table
  24. Dynamic array using ANSI C
  25. What does (void)var actually do?
  26. Is memset(&mystruct, 0, sizeof mystruct) same as mystruct = { 0 };?
  27. How to avoid long chain of free’s (or deletes) after every error check in C?
  28. Creating an MPI_Datatype for a structure containing pointers
  29. passing a struct over TCP (SOCK_STREAM) socket in C
  30. Function interposition in Linux without dlsym

Leave a Comment