In article <AUVBARN.90Dec12185342 at auvc5.tamu.edu> auvbarn at auvc5.tamu.edu (David Barnett) writes: >Is the following prototype legal in ANSI C? >int foo(int a, int ); Yes, a strictly conforming program has the option of supplying identifiers for the prototype parameters or not, in any combination. This follows directly from the grammar.