printf()를 사용하는 데 #include가 필요하지 않은 이유는 무엇입니까? 세션 녹취록: > type lookma.c int main() { printf("%s", "no stdio.h"); } > cl lookma.c Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.762 for 80x86 Copyright (C) Microsoft Corporation. All rights reserved. lookma.c Microsoft (R) Incremental Linker Version 8.00.50727.762 Copyright (C) Microsoft Corporation. All rights reserved. /out:look..