读者可以考虑一下倘若编译程序能够正确地指出代码中的所有问题， 那相应程序的错误情况会怎样？这不单指语法错误，还包括程序中的任何问题，不管它有多么隐蔽。-Readers can consider if the compiler can correctly point out all the problems in the code, and that the corresponding program error, what would happen? This not only refers to a syntax error, the program also include any problems, no matter how subtle.