C char array initialization

by

This is not how you initialize an array, but for:

  1. The first declaration:

    char buf[10] = "";

    is equivalent to

    char buf[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

  2. The second declaration:

    char buf[10] = " ";

    is equivalent to

    char buf[10] = {' ', 0, 0, 0, 0, 0, 0, 0, 0, 0};

  3. The third declaration:

    char buf[10] = "a";

    is equivalent to

    char buf[10] = {'a', 0, 0, 0, 0, 0, 0, 0, 0, 0};

As you can see, no random content: if there are fewer initializers, the remaining of the array is initialized with 0. This the case even if the array is declared inside a function.

More Related Contents:

  1. C char array initialization: what happens if there are less characters in the string literal than the array size?
  2. No compiler error when fixed size char array is initialized without enough room for null terminator
  3. How many chars can be in a char array?
  4. Find the Biggest Number in C, BUT with characters
  5. isnt everything where it should be, why the segmentation fault?
  6. How to resolve a variable for char length? [closed]
  7. Returning an array using C
  8. How to initialize all members of an array to the same value?
  9. How to copy a char array in C?
  10. “error: assignment to expression with array type error” when I assign a struct field (C)
  11. How to initialize array to 0 in C?
  12. Array Type – Rules for assignment/use as function parameter
  13. Initializing entire 2D array with one value
  14. c structure array initializing
  15. Return char[]/string from a function [duplicate]
  16. initializing an array of ints
  17. In C, why can’t I assign a string to a char array after it’s declared?
  18. Convert char array to a int number in C
  19. Hex to char array in C
  20. Declaring and initializing arrays in C
  21. Assign multiple values to array in C
  22. C split a char array into different variables
  23. Detecting mismatched array enum initializers
  24. problems with char array = char array
  25. Assigning char array a value in C
  26. Create a pointer to two-dimensional array
  27. Dynamic allocation of an unknown matrix in C
  28. What’s a modern term for “array/pointer equivalence”?
  29. Doesn’t a 2D array decay to pointer to pointer
  30. Why can’t I create an array with size determined by a global variable?

Leave a Comment