Using printf function

Question

I\'ve never bothered to look for printf as I started learning C++ without C. Now i want to use formatted output in some project. so I\'m looking for some references that can exp

Answer 1

When you write printf("%d", f); the type of f must be int. The code as you have written it invokes undefined behaviour. Taken from an answer to a similar question:

in the documentation for fprintf (7.19.6.1/9) which also applies to printf, it explicitly states that if any argument is not the correct type for the format specifier - for an unmodified %d, that is int - then the behaviour is not defined.

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Why does it print zero?

Maybe they ran out of nasal demons?