dvdjaco - chapter 2

# Chapter 2 exercises
#
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# Exercise 2.2 Write a program that uses raw_input to prompt a user for their name and then welcomes them.
###
user_name = raw_input('Enter your name: ')
print 'Hello ' + user_name

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# Exercise 2.3 Write a program to prompt the user for hours and rate per hour to compute gross pay.
###

prompt_hours = 'Please enter the number of hours: '
prompt_rate = 'Please enter the hourly rate: '

hours = raw_input(prompt_hours)
rate = raw_input(prompt_rate)

gross_pay = float(hours) * float(rate)
print 'The gross pay is ' + str(gross_pay)

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# Exercise 2.4 Assume that we execute the following assignment statements:
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width = 17
height = 12.0

# For each of the following expressions, write the value of the expression and the type (of the value of the expression).
# 1. width/2
# --> 8 (int)
# 2. width/2.0
# --> 8.5 (float)
# 3. height/3
# --> 4.0 (float)
# 4. 1 + 2 * 5
# --> 11 (int)
#
# Check:
#
# >>> width/2
# 8
# >>> type(width/2)
# <type 'int'>
# >>> width/2.0
# 8.5
# >>> type(width/2.0)
# <type 'float'>
# >>> height/3
# 4.0
# >>> type(height/3)
# <type 'float'>
# >>> 1 + 2 * 5
# 11
# >>> type (1 + 2 * 5)
# <type 'int'>
# >>>

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# Exercise 2.5 Write a program which prompts the user for a Celsius temperature, convert the
# temperature to Fahrenheit and print out the converted temperature.
###

prompt = 'Please enter the temperature in Celsius degrees: '
celsius_temp = raw_input(prompt)

fahrenheit_temp = float(celsius_temp)*(9.0/5.0) + 32.0

print 'The temperature in Fahrenheit degrees is: ' + str(fahrenheit_temp)