/* Test whether a basic islower invocation works. */ #include #include "../basic.h" int main(void) { char c1 = 'a'; char c2 = 'A'; if ( !islower(c1) ) errx(1, "islower('%c') was not true", c1); if ( islower(c2) ) errx(1, "islower('%c') was not false", c2); return 0; }