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What is the purpose of fflush() function.

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1. 

What is the purpose of fflush() function.

[A]. flushes all streams and specified streams.
[B]. flushes only specified stream.
[C]. flushes input/output buffer.
[D]. flushes file buffer.

Answer: Option A

Explanation:

"fflush()" flush any buffered output associated with filename, which is either a file opened for writing or a shell command for redirecting output to a pipe or coprocess.

Example:
fflush(FilePointer);
fflush(NULL); flushes all streams.

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