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C Language Programming Library Reference Guide

stdio.h - File Functions - rename


int rename(const char *old_filename, const char *new_filename); Causes the filename referred to by old_filename to be changed to new_filename. If the filename pointed to by new_filename exists, the result is implementation-defined.

On success zero is returned. On error a nonzero value is returned and the file is still accessible by its old filename.

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