1 #include <cstdio> 2 3 int main() 4 { 5 std::FILE* fp; 6 int a = std::getchar(); 7 int b = std::putchar(a); 8 std::clearerr(fp); 9 int c = std::feof(fp); 10 int d = std::ferror(fp); 11 12 return 0; 13 } 14
