• C is the procedural basis for C#, Java, and C++ 
• C is 40 years old, so it is well supported in many environments 
• C is great for high reliability applications since it is fairly independent of OS memory management

Structure of a program in c++ 

the link

http://www.unf.edu/~broggio/cop2221/2221pseu.htm

http://www.etpe.eu/new/custom/pdf/etpe588.pdf