''' Purpose: show how to get a number with desired number of significant digits
    after the decimal point.  makes use of round() capabilities.
'''

# get input and convert to decimal
reply = input( "Enter number: " )
number = float( reply )

print()

# compute eight versions of number
number6 = round( number, 6 )
number5 = round( number, 5 )
number4 = round( number, 4 )
number3 = round( number, 3 )
number2 = round( number, 2 )
number1 = round( number, 1 )
number0 = round( number, 0 )
rounded = round( number    )

# display original number and its seven variants
print( 'number:', number )

print()

print( 'round( number, 6 ):', number6 )
print( 'round( number, 5 ):', number5 )
print( 'round( number, 4 ):', number4 )
print( 'round( number, 3 ):', number3 )
print( 'round( number, 2 ):', number2 )
print( 'round( number, 1 ):', number1 )
print( 'round( number, 0 ):', number0 )

print()

print( 'round( number ):', rounded )