std::fputc,std::putc (3) - Linux Manuals
Defined in header <cstdio>
int fputc( int ch, std::FILE* stream );
int putc( int ch, std::FILE* stream );
Writes a character ch to the given output stream stream.
Internally, the character is converted to unsigned char just before being written.
In C, putc() may be implemented as a macro, which is disallowed in C++. Therefore calls to std::fputc() and std::putc() always have the same effect.
ch - character to be written
stream - output stream
On success, returns the written character.
On failure, returns EOF and sets the error indicator (see std::ferror()) on stream.
// Run this code