1 #include <string.h> 2 3 int main(void)4 main(void) 5 { 6 char *s; 7 8 s = strndup("123", 2); 9 return s[0] != '1' ? 1 : s[1] != '2' ? 2 : s[2] != '\0' ? 3 : 0; 10 } 11