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Full Discussion: QUESTION...simple program?
Top Forums Programming QUESTION...simple program? Post 14819 by sevenstar on Wednesday 6th of February 2002 10:55:55 PM
Old 02-06-2002
Your program is writed in C Plus Plus language,not C .
But I think there are some problems with it. I modifed your code according to your thinking.

----------------------------------------------------------
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <iostream.h>

#include <string.h>

main()
{
cout<<"You have entered my 1814 shell"<<endl;
bool exit=true;
char line[1024]; /* Command String */
int n=0;

while ((exit))
{
cout<<"READY:#";
int iRet;
cin.getline(line,sizeof(line));
/* If you input "exit",you will quit the shell */
if(strcmp(line,"exit") == 0){
cout<<"*** Shell End ***"<<endl;
break;
}
system(line);
cout<<"\n";
cout<<"The command you typed was : "<<line<<endl;
cout<<"\n";
line[0] = 0;
}
}

-------------------------------------------------------------------------
 

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LEARN ABOUT SUSE

column

COLUMN(1)						    BSD General Commands Manual 						 COLUMN(1)

NAME

     column -- columnate lists

SYNOPSIS

     column [-tx] [-c columns] [-s sep] [file ...]

DESCRIPTION

     The column utility formats its input into multiple columns.  Rows are filled before columns.  Input is taken from file operands, or, by
     default, from the standard input.	Empty lines are ignored.

     The options are as follows:

     -c      Output is formatted for a display columns wide.

     -s      Specify a set of characters to be used to delimit columns for the -t option.

     -t      Determine the number of columns the input contains and create a table.  Columns are delimited with whitespace, by default, or with
	     the characters supplied using the -s option.  Useful for pretty-printing displays.

     -x      Fill columns before filling rows.

     Column exits 0 on success, >0 if an error occurred.

ENVIRONMENT

     COLUMNS  The environment variable COLUMNS is used to determine the size of the screen if no other information is available.

EXAMPLES

	   (printf "PERM LINKS OWNER GROUP SIZE MONTH DAY HH:MM/YEAR NAME
" 
	   ; ls -l | sed 1d) | column -t

SEE ALSO

     colrm(1), ls(1), paste(1), sort(1)

HISTORY

     The column command appeared in 4.3BSD-Reno.

AVAILABILITY

     The column command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.

BSD
								   June 6, 1993 							       BSD
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