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C Language INTERVIEW QUESTION & ANSWERS

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21. What is a keyword?
  Keywords are those words of C which have predefined meaning assigned by the C language. They form a part of the database required by the C compiler.
  Posted by Nikhil. (May 02, 2014)
 

Keywords are the reserved words that convey a special meaning to the language compiler.

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22. What are the different types of c instructions?
 
    There are basically three types of instructions in C are :
  • Type Declaration Instruction
  • Arithmetic Instruction
  • Control Instruction
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23. What is an expression?
  Expression is defined as a combination of operands and operators to obtain some computation. Operands represent variables or values and The operator tells is what operation to be performed.
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24. What are the types of data files?
 
    There are two types of data files :
  • stream oriented or standard data files
  • system oriented or low level data files
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25. Why C is called a middle level language?
  C combines the features of both Assembly Level Languages (Low Level Languages) and Higher Level Languages. For this reason, C is referred to as a Middle Level Language. The feature of ALLs is that of enabling us to develop system level programs and the features of HLLs are those of higher degree of readability and machine independence.
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