C Language INTERVIEW QUESTION & ANSWERS
| 46. |
What is a loop? |
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A loop is a process to do a job repeatedly with possibly different data each time.
The statements executed each time constitute the loop body, and each pass is called iteration. A condition must be present to terminate the loop. |
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Posted by Anil. (Dec 29, 2013) |
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Loop is a iteration statements. |
| 47. |
What are the types of data types and explain? |
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There are five basic Data types in C. These are : - void : means nothing i.e. no data involvement in an action
- char : to work with all types of characters used in computer operations
- int : to work with an integer type of data in any computational work
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float : to work with the real type of data or scientific numbers in the exponential form
- double : to work with double precision of numbers when the approximation is very crucial.
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| 48. |
What is friend function? |
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The function declaration should be preceded by the keyword friend.The function definitions does not use either the keyword or the scope operator ::. The functions that are declared with the keyword friend as friend function.Thus, a friend function is an ordinary function or a member of another class. |
| 49. |
What is break statement? |
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When a break is encountered inside a loop, the loop is terminated and the control
passes to the statement following the body of the loop. |
| 50. |
What is the use of getchar() function? |
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It returns a character just entered from the standard input unit, that is, keyboard. The entered character can be either assigned to a character variable or echoed to the computer screen. |
