Fix issue 23872 - Wrong example in Interfacing to C, calling printf

[PetarKirov]

The key part of the printf syntax relating to this example is essentially: %{length modifier}{conversion format specifier}. Some common examples:

• length modifiers:
  • (none) -> used for: int, usinging int
  • l -> used for: long, unsigned long
  • ll -> used for: long long, unsigned long long
  • z -> used for: size_t
  • t -> used for: ptrdiff_t
• conversion specifiers:
  • d, i - signed integer integer to decimal representation
  • u - unsigned decimal integer to decimal representation
  • o - unsigned decimal integer to octal representation
  • x - unsigned decimal integer to hexadecimal representation

For reference, see: https://en.cppreference.com/w/c/io/fprintf

The issue was reported here:
https://forum.dlang.org/post/wodeaztcqwxulrfrgjvb@forum.dlang.org

[dlang-bot]

Thanks for your pull request, @PetarKirov!

Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	23872	minor	Wrong example in Interfacing to C: Calling printf section