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Two other syntactic symbols can appear in old style, non-prototyped C code 43:
1: int add_three_integers(a, b, c) 2: int a; 3: int b; 4: int c; 5: { 6: return a + b + c; 7: }
Here, line 2 is the first line in an argument declaration list and so is
given the knr-argdecl-intro
syntactic symbol. Subsequent lines
(i.e., lines 3 and 4 in this example), are given knr-argdecl
syntax.