C Language Interview Question and Answers
| 91. |
What is the difference between the functions memmove() and memcpy()? |
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The arguments of memmove() can overlap in memory. The arguments of memcpy() cannot. |
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| 92. |
what is a stream? |
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A stream is a source of data or destination of data that may be associated with a disk or other I/O device. The source stream provides data to a program and it is known as input stream. The destination stream eceives the output from the program and is known as output stream. |
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| 93. |
What is meant by file opening? |
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The action of connecting a program to a file is called opening of a file. This requires creating an I/O stream before reading or writing the data. |
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| 94. |
What is a file pointer? |
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The pointer to a FILE data type is called as a stream pointer or a file pointer. A file pointer points to the block of information of the stream that had just been opened. |
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| 95. |
What are the advantages of using array of pointers to string instead of an array of strings? |
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Efficient use of memory.
Easier to exchange the strings by moving their pointers while sorting. |
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Gk Questions with Answers