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