In fopen(), the mode that appends (a) to a binary (b) file is _____________.

a b

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a

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a +

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r +

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Solution

The correct option is A $a b$
In fopen (), the mode that appends (a) to a binary (b) file is ab. "ab" is "append; open or create binary file for writing at end-of-file".

The fopen () function opens the file whose pathname is the string pointed to by filename, and associates a stream with it. Append; open or create file for writing at end-of-file. r + or r b + or r + b. Open file for update (reading and writing).

Append is the name of a procedure for concatenating (linked) lists or arrays in some high-level programming languages.

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