Code:

guess = input()
d

Error:

Traceback (most recent call last):
  File "", line 1, in 
  File "", line 1, in 
NameError: name 'd' is not defined

The problem is actually with the version of Python that I was using. If you
are using Python 2.x, you need to use the raw_input() function. And with 3.x
you can use the input() function.

if <some true/false statement> :
  <some statements that run if the if statement is true>
else:
  <some other statements that run if the if statement are false>

There may be times when you have more than one value set to test against. In that case you can write a many if/else
statements but you can chain the if/else statements with an elif. So the chain becomes if/elif/else.

if x < 5:
  <some statements that run if the if statement is true>
elif x > 5 and x < 10:
  <some statements that run if the elif statement is true>
else:
  <if none of the if checks are true, run the statements in the else case.>

if inp > 2 and inp % 2 == 0:
  pass
elif inp > 3 and inp % 3 == 0:
  pass
elif inp > 7 and inp % 7 == 0:
  pass
elif inp > 9 and inp % 9 == 0:
  pass
else:
  print inp, " is a prime"

Yes, this does not accurately find the primes, but it would skip any number that is divisible by 2,3,5,7, or 9. And
anything that does not match this will be listed as a prime, this is incorrect and would be made to add new elif
statements as each prime was found.

#include 

int main()
{
  char name[10];

  scanf("%s",&name);
  if (checkifNumber(name))
  {
     printf("Is a number\n");
  }
  else
  {
     printf("Invalid number\n");
  }
}

int checkifNumber(char *inp)
{
  int i=0;
  int isanumber = 1;

  while(inp[i] != '\0' && i < 10)
  {
    if (inp[i] >= '0' && inp[i] <= '9')
    {
    }
    else
    {
      isanumber =0;
    }
    i++;
  }
  return isanumber;
}

One thing that could be improved is to potentially use a global variable to define the length of the
input string as it is used in two different places in the program and could potentially lead to an
array overrun/underrun.

To add it for the current command prompt:

set PATH=%PATH%;"C:\Program Files\Sometool"

This will add the variable to the current command prompt environment but will go away once you close the window and will not
be available to other prompts unless you type it in again.

To add it to the Windows Environment, you can use the My Computer->Properties menu to select the “Advanced System Settings”
in Windows 7 to then select the “Environment Variables…”. Now the choice you have is to add it to the System variables or
the User variables for.

If you choose the System varables you will be adding it to the system as a whole and any other user who logs in will have
the updated path. If you add it to the User variables, then it is only available to your user.

Whichever you choose, select the Path entry and click the “Edit…” button. This will pop up a dialog that will let
you add to the “Variable Value” entry. Now you will need to decide whether you want your new path at the beginning, end,
or somewhere in the middle. You might add it to the beginning if it is being used to override an existing command. You
may add to the end if there is no conflict with other installs. And finally, you may need to choose the middle if there
are some commands you need to override but others that need to be left alone.

Entries are separated by the semi-colon “;” character in DOS.

Here is the sample program I wrote to test the expected output:

 my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime;

# formatted just by concatenating output
my $datestring = $mon . "/" . $mday . "/" . $year . "  " . $hour . ":" . $min.
":" . $sec  ;

# formatted using sprintf to ensure proper digit counts are output
my $datestring2 = sprintf("%02d/%02d/%04d %d:%02d:%02d %s",$mon,$mday,1900 +$yea
r,$hour,$min,$sec, $hour >= 12? "PM" : "AM");

 print $datestring;
  print $datestring2;

Here is a table of the characters and their XML representations that can be used for replacement:

This is by no means the complete list of replacements. This is only that characters that were needed by the calls to Java Mail that my program was using.

I used the following to convert my date:

package com.etechtips;

import java.util.Calendar;
import java.util.GregorianCalendar;

import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.XMLGregorianCalendar;

public class UpdateDate {

	public static void main(String[] args) {
		XMLGregorianCalendar xgcstart;
		GregorianCalendar gc;
		int daycount = 0;
		if (args.length != 1)
		{
			System.out.println("Need to specify offset");
			System.exit(1);
		}

		daycount = Integer.parseInt(args[0]);

		// This will get the current date based on System time of an object
		gc = new GregorianCalendar();
		System.out.println("CURRENT:" + gc.toString());

		// This will offset the date by daycount days
		gc.add(Calendar.DATE, daycount);
		System.out.println("OFFSET: "+ gc.toString());

		try
		{
			// Now the XMLGregorianCalendar object has an
                        instance that is based on the time set in the gc object
			xgcstart = DatatypeFactory.newInstance().newXMLGregorianCalendar(gc);
		}
		catch(DatatypeConfigurationException dce)
		{
			dce.printStackTrace();
			System.exit(1);
		}

		// Code omitted
	}
}

Output:

CURRENT:java.util.GregorianCalendar[time=1321793315934,areFieldsSet=true,areAllFieldsSet=true,\
lenient=true,zone=sun.util.calendar.ZoneInfo[id="America/Chicago",offset=-21600000,\
dstSavings=3600000,useDaylight=true,transitions=235,\
lastRule=java.util.SimpleTimeZone[id=America/Chicago,offset=-21600000,dstSavings=3600000,\
useDaylight=true,startYear=0,startMode=3,startMonth=2,startDay=8,startDayOfWeek=1,\
startTime=7200000,startTimeMode=0,endMode=3,endMonth=10,endDay=1,endDayOfWeek=1,endTime=7200000,\
endTimeMode=0]],firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,YEAR=2011,MONTH=10,\
WEEK_OF_YEAR=48,WEEK_OF_MONTH=4,DAY_OF_MONTH=20,DAY_OF_YEAR=324,DAY_OF_WEEK=1,DAY_OF_WEEK_IN_MONTH=3,\
AM_PM=0,HOUR=6,HOUR_OF_DAY=6,MINUTE=48,SECOND=35,MILLISECOND=934,ZONE_OFFSET=-21600000,\
DST_OFFSET=0]
OFFSET: java.util.GregorianCalendar[time=1321706915934,areFieldsSet=true,areAllFieldsSet=true,\
lenient=true,zone=sun.util.calendar.ZoneInfo[id="America/Chicago",offset=-21600000,\
dstSavings=3600000,useDaylight=true,transitions=235,lastRule=java.util.SimpleTimeZone[id=America/Chicago,\
offset=-21600000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=3,startMonth=2,\
startDay=8,startDayOfWeek=1,startTime=7200000,startTimeMode=0,endMode=3,endMonth=10,endDay=1,\
endDayOfWeek=1,endTime=7200000,endTimeMode=0]],firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,\
YEAR=2011,MONTH=10,WEEK_OF_YEAR=47,WEEK_OF_MONTH=3,DAY_OF_MONTH=19,DAY_OF_YEAR=323,\
DAY_OF_WEEK=7,DAY_OF_WEEK_IN_MONTH=3,AM_PM=0,HOUR=6,HOUR_OF_DAY=6,MINUTE=48,SECOND=35,\
MILLISECOND=934,ZONE_OFFSET=-21600000,DST_OFFSET=0]

The printouts above show the current date and the new date based on the offset. I made the day of the month bold in the printouts to show what the offset has updated the date. You could put a much larger offset than 1 and Calendar object will take care of updating the day of week, week of year and more. You will not need to deal with checking for leap year or dealing with updating all the month and years, this is all taken care of for you.

SET PASS=somepassword
: or
:SET PASS=
if x%PASS%= X (
  SET PASSARG=--password somepassword
) else
(
  SET PASSARG=
)

commandtorun %PASSARG%

Now if the user comments out his password, the script will make the PASSARG environment variable be empty or if they set a password the passarg variable will be filled in.

The following is the basic code to handle the command line arguments.

class CmdArgs
{

  public static void main(String[] args)
  {
      int argsize = args.length;
      String curarg;

      if (argsize > 0 )
      {

      }

      for(int i = 0; i < argsize; i++)
      {
          if (args[i].equals("--host")
          {
             args++;
             host = args[i];
           }
          else if (args[i].equals("--debug")
          {
               debug = 1;
          }
          else
          {
              System.out.println("Unknown option: " + args[i]);
              System.exit(1);
          }
       }

   }
}

The bat file for Dos/Windows might look like this:

@echo off

java -cp c:\javabin;somejar.jar  com.etechtips.CmdArgs %*

The shell based file might look like:

java -cp /home/ecdown/javabin:somejar.jar com.etechtips.CmdArgs $*