Sizeof string literal

by
  1. sizeof("f") must return 2, one for the ‘f’ and one for the terminating ‘\0’.
  2. sizeof(foo) returns 4 on a 32-bit machine and 8 on a 64-bit machine because foo is a pointer.
  3. sizeof(bar) returns 2 because bar is an array of two characters, the ‘b’ and the terminating ‘\0’.

The string literal has the type ‘array of size N of const char‘ where N includes the terminal null.

Remember, arrays do not decay to pointers when passed to sizeof.

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