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#include #include int main (void) { #define test(ret, args...) \ printf (args); \ if (printf (args) != ret) \ abort (); test (5, "hello"); test (6, "hello\n"); test (1, "a"); test (0, ""); test (5, "%s", "hello"); test (6, "%s", "hello\n"); test (1, "%s", "a"); test (0, "%s", ""); test (1, "%c", 'x'); test (7, "%s\n", "hello\n"); test (2, "%d\n", 0); return 0; }