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Bookmark or Share- What is the difference between %f and %lf in C? - Stack OverflowIn C89, %lf caused undefined behaviour although it was a common extension to treat it as %f. The reason that one specifier can be used for two different types in printf is because of the default argument promotions ; arguments of type float are promoted to double when used to call a function and not matching a parameter in a function prototype.
- c - Correct format specifier for double in printf - Stack OverflowFormat %lf is a perfectly correct printf format for double, exactly as you used it. There's nothing wrong with your code. Format %lf in printf was not supported in old (pre-C99) versions of C language, which created superficial "inconsistency" between format specifiers for double in printf and scanf. That superficial inconsistency has been ...
- c - Why does scanf () need "%lf" for doubles, when printf () is okay ...%lf for double %Lf for long double; It just so happens that when arguments of type float are passed as variadic parameters, such arguments are implicitly converted to type double. This is the reason why in printf format specifiers %f and %lf are equivalent and interchangeable. In printf you can "cross-use" %lf with float or %f with double.
- Difference between CR LF, LF and CR line break typesCR and LF are control characters, respectively coded 0x0D (13 decimal) and 0x0A (10 decimal). They are used to mark a line break in a text file. As you indicated, Windows uses two characters the CR LF sequence; Unix (and macOS starting with Mac OS X 10.0) only uses LF; and the classic Mac OS (before 10.0) used CR. An apocryphal historical ...
- What are carriage return, linefeed, and form feed?LF: Multics, Unix and Unix-like systems (Linux, OS X, FreeBSD, AIX, Xenix, etc.), BeOS, Amiga, RISC OS, and others CR: Commodore 8-bit machines, Acorn BBC, ZX Spectrum, TRS-80, Apple II family, Oberon, the classic Mac OS up to version 9, MIT Lisp Machine and OS-9
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