C语言是一种计算机程序设计语言。它既具有高级语言的特点，又具有汇编语言的特点。它由美国贝尔研究所的D.M.Ritchie于1972年推出。1978后，C语言已先后被移植到大、中、小及微型机上。-C language is a computer programming language. It has a high-level language features, but also has the characteristics of assembly language. It was launched by DMRitchie Bell Institute in 1972. After 1978, C language it has already been ported to the big, the medium, small and microcomputers.