a2zinterviews

1.	What is embedded C?
	Embedded C is the extension of C programming language. Embedded C is used to develop micro controller based applications. Embedded C includes features not available in normal C like fixed point arithmetic, named address spaces and basic I/O hardware addressing. Cell phones, MP3 players are some example for embedded systems in which embedded C is used to program and control these devices.
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2.	What do you mean by high level, middle level and low level language?
	High level languages These level languages provide almost everything that the programmer might need to do as already build into the language. Example: Java, Python. Middle level languages These languages don't provide all the built in functions found in high level languages, but provide all building blocks that we need to produce the result we want. Example: C, C++ Low level languages These languages provide nothing other than access to the machine's basic instruction set. Example: Assembly language.
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3.	What is the difference between Library Function and User-Defined Function?
	Library functions are the functions which are already written in some standard libraries. User defined function means the function which are written by the user to perform particular task.
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4.	Where is C program language used or uses of C language?
	C languages is used to develop system applications that forms major portion of operating systems such as Windows, UNIX and Linux. Operating systems, C compiler and all UNIX application programs are written in C language. Below are some examples of uses of C language. Database systems Graphics packages Word processors Spread sheets Operating system development Compilers and Assemblers Network drivers Interpreters
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