The other is a book in C language, which is the designated textbook of the National Computer Rank Examination-C language programming, written by the Examination Center of the Ministry of Education and published by Higher Education Press. Or buy "C Programming" written by Tan Haoqiang (preferably the third or fourth edition) and publish it by Tsinghua University Publishing House. Both books will do.
The last one is "C language programming of the second-level examination questions set of the National Computer Rank Examination", published by Nankai University Press, commonly known as "Nankai Hundred Questions". This is a question bank for computer examination, and the latest version of 20 13 must be purchased.
This year, compared with previous years, there is no paper test and no written test at Level 2. The paperless exam includes 40 multiple-choice questions and 60 computer operation questions, but I haven't read this year's book because I haven't started the exam yet. It is not clear whether this 40-point multiple-choice question bank is open. The package of "Nankai Hundred Questions" does not include these 40 questions. It will be a blessing if it is open. Therefore, the textbook should be carefully read in the end, and you can also look at the questions of the past years.
All the books mentioned above, except Tan Haoqiang's, are officially designated textbooks, so it is best not to buy other similar textbooks instead. These are sold in Amazon China, and they should be easy to buy in a big bookstore nearby.