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1.	Who developed C language?
	C programming language was developed at Bell Laboratories in 1972 by Dennis Ritchie.
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2.	What is the difference between C and C++?
	Even though C and C++ programming languages are belonging to middle level languages, both are differed in below. C is structure/procedure oriented programming language whereas C++ is object oriented programming language. C language program design is top down approach whereas C++ is using bottom up approach. Polymorphism, virtual function, inheritance, Operator overloading, namespace concepts are not available in C programming language. Whereas C++ language supports all these concepts and features. C languages give importance to functions rather than data. Whereas C++ gives importance to data rather than functions. So, data and function mapping is difficult in C. But, data and function mapping is simple in C++ that can be done using objects. C language does not support user define data types. Whereas C++ supports user define data types. Exception handling is not present in C programming language. Whereas exception handling is present in C++ language. C language allows data to freely flow around the functions. But, data and functions are bound together in C++ which does not allow data to freely flow around the functions.
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3.	Which level is C language belongings to?
	C language is belonging to middle level language. C language behaves as a bridge between machine level (low level) Languages and high level languages. C language is more user friendly than machine level languages. And, C language support does not support all the concepts that high level languages offer. So, C programming languages is called as middle level language.
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4.	What are the types of errors occurred in C program?
	There are four types of errors occurred during the program execution. Syntax errors Runtime errors Logical errors Latent errors
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