#  SumImproved.py  Copyright (c) 2006 Kari Laitinen

#  http://www.naturalprogramming.com

#  2006-05-28  File created.
#  2006-05-28  Last modification.

#  This is a simple calculator program that can
#  calculate the sum of the two integers that are
#  typed in from the keyboard.

#  The number sign (#) starts a comment line in Python.

#  All statements in Python 'main' program must begin in the
#  first column. Statements may not be indented unnecessarily since
#  indented statements form a nested program block.

#  You must use a backslash (\) to continue a statement on the
#  following program line.

#  Variables are not declared in Python programs. Instead, variables
#  are 'born' when they are assigned values.

#  Built-in runction raw_input() reads a string from the keyboard.

#  Built-in function int() converts a string to an integer value.

#  print is a Python keyword. print statements normally print a
#  newline after the printing operation. This can be prevented by
#  writing a comma at the end of the print statement.

#  See programs Distance.py and Formatting.py in pythonfiles2 for
#  information about the format specifiers (e.g. %d).

print "\n Please, type in an integer:     ",
first_integer_from_keyboard  =  int( raw_input() )

print "\n Please, type in another integer:",
second_integer_from_keyboard  =  int( raw_input() )

sum_of_two_integers  =  first_integer_from_keyboard  +  \
                        second_integer_from_keyboard

print "\n The sum of %d and %d is %d."  %  ( first_integer_from_keyboard,
      second_integer_from_keyboard, sum_of_two_integers )