How can I get my program to print floats?

Question

I've written a small program to help me with my math homework:

import math
def saCircle():
    while True: 
        radius = float(raw_input("Enter the radius: "))
        print "\nFinding area with %d as the radius" % radius  
        x = math.pi * radius**2
        print "\nThe area of your circle is %d\n" % x 
saCircle()

The problem is that it will accept a decimal number but it will not print out the value of the decimal number.

How can I fix this?

score 3 · Accepted Answer · edited May 23 '17 at 12:07

3

Use %f instead of %d (rounds your number to an integer) to print a float:

>>> radius = 4.4
>>> x = math.pi * radius**2
>>> print "\nThe area of your circle is %f\n" % x

The area of your circle is 60.821234

This question explains the difference very well.

edited May 23 '17 at 12:07

Community

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answered Mar 12 '16 at 21:11

Idos

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score 1 · Answer 2 · answered Mar 12 '16 at 21:11

1

The format specifier for floats is %f, not %d (%d is for integers).

print "\nFinding area with %f as the radius" % radius
                           ^

See the Wikipedia article on printf format strings for more details.

answered Mar 12 '16 at 21:11

arshajii

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Thank you... I will be taking a look. – Snicklezs Mar 12 '16 at 21:16

How can I get my program to print floats?

2 Answers2