Correct format specifier for return value of sizeof() in C

by

You’re trying to print the return value of sizeof operator, which is usually of type size_t.

It appears, in your case, size_t is a typedef of long unsigned int, so it demands it’s compatible format specifier %lu to be used. The returned value here does not matter, your problem is with the type mismatch.

Note: To have a portable code, it’s safe to use %zu, on compilers based on C99 and forward standards.

More Related Contents:

  1. Can I change the datatype of previously declared variable in C?
  2. What is the difference between String and string in C#?
  3. What is the output of the following code in C? [closed]
  4. How I can correct my c code?
  5. pointer to string concept in c [closed]
  6. Why is this string reversal C code causing a segmentation fault? [duplicate]
  7. What does a type followed by _t (underscore-t) represent?
  8. When should I use ampersand with scanf()
  9. What is the difference between String and string in C#?
  10. Converting std::__cxx11::string to std::string
  11. How do I create an array of strings in C?
  12. How to convert enum names to string in c
  13. Are string literals const?
  14. C99 boolean data type?
  15. How to compare strings in an “if” statement? [duplicate]
  16. fgets() includes the newline at the end [duplicate]
  17. Difference between size_t and unsigned int?
  18. Format a string into columns
  19. String to Binary in C#
  20. min and max value of data type in C
  21. Print all the permutations of a string in C
  22. String.Format – how it works and how to implement custom formatstrings
  23. Why does char* cause undefined behaviour while char[] doesn’t?
  24. Concatenating strings in C, which method is more efficient?
  25. String.indexOf function in C
  26. Does C support raw string literals?
  27. Does C have any tools for doing string addition?
  28. C -> sizeof string is always 8
  29. Reading newline from previous input when reading from keyboard with scanf()
  30. Output single character in C

Leave a Comment