C 语言是一种通用、程序式的程序语言，具有高效、灵活、功能丰富、表达力强和移植性好等的特点，在程序设计师中备受青睐 -C language is a general, procedural programming language, is an efficient, flexible, feature-rich, articulate and good portability features, has become widely accepted in the program design