I am just learning C and I have a little knowledge of Objective-C due to dabbling in iOS development. In Objective-C, I was using NSLog(@"%i", x); to print the variable x to the console. However, I have been reading a few C tutorials and they are saying to use %d instead of %i.
printf("%d", x);
and printf("%i", x); both print x to the console correctly.
These both seem to get me to the same place, so which is preferred? Is one more semantically correct or is right?
They are completely equivalent when used with printf(). Personally, I prefer %d. It's used more often (should I say "it's the idiomatic conversion specifier for int"?).
(One difference between %i and %d is that when used with scanf(), then %d always expects a decimal integer, whereas %i recognizes the 0 and 0x prefixes as octal and hexadecimal, but no sane programmer uses scanf() anyway, so this should not be a concern.)