The growing popularity of C, the changes in the language over the years, and the creation of compilers by groups not
involved in its design, combined to demonstrate a need for a more precise and more contemporary definition of the language..
#We want to get you as quickly as possible to the point where you can write
useful programs, and to do that we have to concentrate on the basics: variables and constants, arithmetic, control flow,
functions, and the rudiments of input and output.