C – What is this syntax about?

by

It shifts the bits in the integer 1 var positions to the left. So in effect it calculates 2 to the power of var.

See the article on bit shifts on wikipedia.

More Related Contents:

  1. while loop and static variable
  2. Why is a=4 evaluated as true but b=0 evaluated as false in an if condition?
  3. Given an executable file, display its complete path [closed]
  4. What is the behavior of integer division?
  5. How do function pointers in C work?
  6. sizeof() operator in if-statement
  7. close vs shutdown socket?
  8. What does void* mean and how to use it?
  9. What is the reason for using a double pointer when adding a node in a linked list?
  10. Can the linker inline functions?
  11. using rand to generate a random numbers
  12. How to compare pointer to strings in C
  13. How to share semaphores between processes using shared memory
  14. Share condition variable & mutex between processes: does mutex have to locked before?
  15. How to clear stdin before getting new input?
  16. Convert a Static Library to a Shared Library?
  17. gcc, strict-aliasing, and casting through a union
  18. Accessing elements of a matrix row-wise versus column-wise
  19. What does “request for member ‘*******’ in something not a structure or union” mean?
  20. behaviour of malloc(0)
  21. Arrow Operator vs. Dot Operator [closed]
  22. Compiling multiple C files in a program
  23. The ‘volatile’ keyword in the C language [duplicate]
  24. dynamic allocation/deallocation of 2D & 3D arrays
  25. Why is 0 moved to stack when using return value?
  26. Segmentation fault when allocating large arrays on the stack
  27. Function declaration inside of function — why?
  28. how to detect a file is opened or not in c
  29. How can I malloc a struct array inside a function? Code works otherwise
  30. How to write/read to FLASH on STM32F4, Cortex M4

Leave a Comment