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The class
FileStream
was deprecated for a long time. It has high overheads for writing a single character withfputc()
.Therefore,
FileStream
was superseded byFileReadStream
(filereadstream.h) andFileWriteStream
(filewritestream.h). The new ones require a buffer supplied by user. And they usefread()
andfwrite()
to improve performance overfputc()
.