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[streambuf.pub.put]

31 Input/output library [input.output]

31.6 Stream buffers [stream.buffers]

31.6.3 Class template basic_streambuf [streambuf]

31.6.3.3 Public member functions [streambuf.members]

31.6.3.3.5 Put area [streambuf.pub.put]

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int_type sputc(char_type c);

1

Effects: If the output sequence write position is not available, returns overflow(traits​::​to_int_type(c)).

Otherwise, stores c at the next pointer for the output sequence, increments the pointer, and returns traits​::​to_int_type(c).

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streamsize sputn(const char_type* s, streamsize n);

2

Returns: xsputn(s, n).