A programming language is a machine-readable artificial language designed to express computations that can be performed by a machine, particularly a computer. Programming languages can be used to create programs that specify the behavior of a machine, to express algorithms precisely, or as a mode of human communication.
Many programming languages have some form of written specification of their syntax and semantics, since computers require precisely defined instructions. Some (such as C) are defined by a specification document (for example, an ISO Standard), while others (such as Perl) have a dominant implementation.
The earliest programming languages predate the invention of the computer, and were used to direct the behavior of machines such as Jacquard looms and player pianos. Thousands of different programming languages have been created, mainly in the computer field, with many more being created every year.
how to code program

the word in black screen
after we finish a program, we must click compile word in programming software, if "sucess" words is come out, mean that the whole coding are smooth and no problem, but the logical error cannot be compile, so that we must find out the problem during answer in black screen, if can answer, mean that the program is no problem at all, if the black screen cannot run propaly, means that the program have logical error..The syntax of a language describes the possible combinations of symbols that form a syntactically correct program. The meaning given to a combination of symbols is handled by semantics (either formal or hard-coded in a reference implementation). Since most languages are textual, this article discusses textual syntax.
Programming language syntax is usually defined using a combination of regular expressions (for lexical structure) and Backus-Naur Form (for grammatical structure). Below is a simple grammar, based on Lisp
the purpose of this building is use for meeting and anti cyanide...in this village, is only have amount 400 people, how to anti with government???2 years ago, the government give the agreement to the australia company and this company are progressing their tools, until 2009 year, the prosess of mine gold are started, but as our knowlarge the air of sodium cyanide can spread from the air and water, the air and solution of sodium cyanide are coulourless, we don't know when the air are spread or the solution mix in the water?? so, people live in this town will worried everyday..

he is a very potential people in this town, his house are short distance with the mine... so, in every midnight, he can get the smell of sodium cyanide, therefore he take a action, to bring his wife to KL, but he stay in the forest, to avoid the smell of sodium cyanide, but unfortunately, he die in the forest by heart attack...