関連ワード:  is it necessary to use return 0 in c    when to use return 0 in c    is return 0 necessary in c    what happens if we don't use return 0 in c    is it necessary to write return 0 in c    why do you need return 0 in c    what is the point of return 0 in c++  
結果 : is it necessary to use return 0 in c