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C Language INTERVIEW QUESTION & ANSWERS

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91. What is difference between function overloading and operator overloading?
  A function is overloaded when same name is given to different function.While overloading a function, the return type of the functions need to be the same.
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92. What is getche() function?
  It returns a character just entered from the standard input unit. The entered character is echoed (displayed) to the computer screen. It reads a single character the moment it is typed without waiting for the Enter key to be hit.
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93. What is getch() function?
  It returns a character just entered from the standard input unit. The entered character is not echoed on the screen. It reads a single character the moment it is typed without waiting for the Enter key to be hit.
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94. What is putchar() function?
  It prints the character constant or the character variable to the standard output device. The function putchar( ) has the following form :
putchar (var name)
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95. What is an arrays?
  Arrays can be defined as a collection of variables of the same type that are referred through a common name.
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