''' Purpose: relate a cautionary tale -- make sure your expressions do
        what they are supposed to do
'''

# get Celsius temperature c

reply = input( 'Enter Celsius temperature: ' )

c = int( reply ) # Convert string of user input to integer and store the number in variable c

print( )


# compute respectively, f1 and f2, the decimal and integer Fahrenheit equivalents of c 

# Formula for Fahrenheit is 9/5 c + 32 where c is the Celcius temperature
# How would we express this in Python?

# Integer vs. Float Division
# 9/5 = 1.8
# 9//5 = 1 (Integer division is where the decimal gets chopped off)

# How you order operators / numbers matters in your calculations!
# When Python does calculations, it follows order of operations! (PEMDAS)
# PEMDAS - Operator Precedence follows order of operations in Python
# PEMDAS - Parentheses Exponentiation Multiplication Division Addition Subtraction
# Order of operations goes left first ^ to right down the line

f1 = ( ( 9/5 ) *c ) + 32

f2 = ( ( 9//5 ) * c ) + 32 # Wrong! 1 * c + 32 (will yield wrong result mathematically)

f2 = ( 9 * c // 5 ) + 32

f2 = 32 + ( 9 * c // 5 ) # Python will first do 9 * c (M) and then do result of 9*c // 5 (D) and then 32 + that result 9*c // 5 (A)

# display results

print( c, 'C =', f1, 'F' )

print( )

print( c, 'C =', f2, 'F' )