说明：  Ｃ语言是在 70 年代初问世的。一九七八年由美国电话电报公司(AT&T)贝尔实验室正式发表了Ｃ语言。本书为强哥经典讲义
(C language is in the early 70s came out. In 1978 by the American Telephone and Telegraph Company (AT & T) Bell Labs has just released the C language. Book notes for the strong Columbia Classic)