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Annotation of researchv10dc/man/adm/man3/perror.3, revision 1.1.1.1

1.1       root        1: .TH PERROR 3
                      2: .CT 2 debug_tune proc_man
                      3: .SH NAME
                      4: perror, sys_errlist, sys_nerr \(mi system error messages
                      5: .SH SYNOPSIS
                      6: .nf
                      7: .B perror(s)
                      8: .B char *s;
                      9: .PP
                     10: .B int sys_nerr;
                     11: .B char *sys_errlist[];
                     12: .fi
                     13: .SH DESCRIPTION
                     14: .I Perror
                     15: produces a short error message
                     16: on the standard error file
                     17: describing the last error encountered during a call
                     18: to the system from a C program.
                     19: First the argument string
                     20: .I s
                     21: is printed, then a colon, then the message and a new-line.
                     22: The error number is taken from the external variable
                     23: .I errno
                     24: (see
                     25: .IR intro (2)),
                     26: which is changed only when errors occur.
                     27: .PP
                     28: .I Sys_errlist
                     29: is a vector of message strings.
                     30: .I Errno
                     31: can be used as an index in this table to get the
                     32: message string without the newline.
                     33: .I Sys_nerr
                     34: is the number of messages in the table.
                     35: .SH "SEE ALSO"
                     36: .IR intro (2)

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