py4inf_ch2

## ex. 2.2
## Write a program that uses raw_input to prompt a user for their name and then welcomes them.
name = raw_input('What is your name? \n')
print "Hello ", name


## ex. 2.3
## Write a program to prompt the user for hours and rate per hour to compute gross pay.
## Enter Hours: 35
## Enter Rate: 2.75
## Pay: 96.25

hours = raw_input('Enter hours \n')
while hours.isdigit()==False:
    hours = raw_input('Please enter a number for hours \n')
rate = 2.75
pay = float(hours)*rate
print "Pay ", round(pay,2)


## ex. 2.4
## Assume that we execute the following assignment statements:
## 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
## 2.  width/2.0
## 3.  height/3
## 4.  1 + 2 * 5

width  = 17
height = 12.0
print 'width/2=',width/2
print 'width/2.0=',width/2.0
print 'height/3=',height/3
print '1+2*5=', 1+2*5


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


tempC=raw_input('Tell me the temperature in Celsius \n')
while tempC.isdigit()==False:
    tempC=raw_input('The temperature must be a number \n')
print 'The temperature in Fahrenheit is ', float(tempC)*9/5+32