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9.	What is the difference between C and Java?
	C is structure/procedure oriented programming language whereas Java is object oriented programming language. C language program design is top down approach whereas Java is using bottom up approach. C language is middle level language whereas Java is high level language. Exception handling is not present in C programming language. Whereas exception handling is present in Java. Polymorphisms, virtual function inheritance, operator overloading, namespace concepts are not available in C programming language. Whereas Java supports all these concepts and features.
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10.	Whether C language is low level language, or middle level language?
	The C language is a middle level language. It is called a middle level language because it has features of high level language as well as low level language.
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11.	What is modular programming?
	It is a programming technique that produces relatively small, easily understandable computer modules. A complex or large program is broken into number of logically self contained modules. These modules may be written and tested separately by number of programmers. Finally, the modules can be then put together to form the complete program/system.
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12.	Is C language case sensitive?
	Yes. C language instructions/commands/functions and everything used in C program are case sensitive.
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