strerror.3 (653B)
1 .TH strerror 3 2 .SH NAME 3 strerror - get error message string 4 .SH SYNOPSIS 5 #include <string.h> 6 7 char *strerror(int errnum) 8 .SH DESCRIPTION 9 The 10 .BR strerror () 11 function maps the number passed with errnum 12 to a message string. 13 .PP 14 Typically, the values for 15 .I errnum 16 come from errno, 17 but strerror shall map any value of type int to a message. 18 .PP 19 The array pointed to by the pointer returned 20 shall not be modified by the program, 21 but may be overwritten 22 by a subsequent call to the 23 .B strerror 24 function. 25 .SH RETURN VALUE 26 The function returns a pointer to the string, 27 the contents of which are locale-specific. 28 .SH STANDARDS 29 ISO/IEC 9899:1999 Section 7.21.6.2