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       strerror.3 (653B)
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            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