🚀 go-pugleaf

The following script shows an example of a function call which is not
governed by a prototype, calling a (non-visible) function defined in
prototype syntax.

Would someone please report the section numbers of the standard that
describe this programs combination of prototype and non-prototype
usage.

Thanks for any help.

Lines 1-6 show the system/compiler information
Lines 8-20 show the program example
Lines 21-25 show the compile, warnings and output

     1	Script started on Thu Dec 24 18:34:23 1992
     2	dspsim1% uname -a
     3	SunOS dspsim1 4.1.2 1 sun4m
     4	dspsim1% gcc -v
     5	Reading specs from /usr/local/lib/gcc-lib/sparc-sun-sunos4.1/2.3.1/specs
     6	gcc version 2.3.1
     7	dspsim1% cat c.c
     8	#include <stdio.h>
     9	main(int argc,char **argv)
    10	{
    11	        float   f=1.0;
    12	
    13	        func(f); /* no declaration in prototype form is visible */
    14	}
    15	
    16	/* definition of func() is not visible  from main() */
    17	func(float f)
    18	{
    19	        printf("%f\n",f);
    20	}
    21	dspsim1% gcc -ansi c.c
    22	c.c:11: warning: type mismatch with previous implicit declaration
    23	c.c:6: warning: previous implicit declaration of `func'
    24	dspsim1% a.out
    25	1.875000
    26	dspsim1% ^D
    27	script done on Thu Dec 24 18:35:32 1992