On Mon, 13 Mar 2017 21:50:30 -0700, retired mainframer wrote: >fprintf is a variadic function. Therefore any float passed to the function >will be automatically promoted to double before the function is called (as >long as the prototype is in scope). ... > Isn't that true even if the programmer provides no prototype? Necessarily, in order to preserve compatibility with code antedating the invention of function prototypes.
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