C Language and Libraries Help (clang.hlp) (Table of Contents; Topic list)
strerror, _strerror
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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <string.h>
 
  Syntax:    char *strerror( int errnum );
             char *_strerror( char *string );
 
  Returns:   a pointer to the error-message string.
 
  See also:  perror, clearerr, errno, ferror, _sys_nerr
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