Easy Python Program for Kids Complex Number Converter Free Code

import math

print("""

WELCOME TO COMPLEX NUMBER CALCULATOR

This program converts a rectangular coordinate system complex number to polar coordinate system complex number;

and vice- versa.

This is a free program and can be used and redistributed without any attribution.

""")

i = 0

while i == 0:

    c = input(" Please Enter the Coordinate System you want to convert : [R] for Rectangular, [P] for Polar or [Q] to quit the program: ")

    if (c.lower() == 'r'):

        a = int(input("Enter the Real Part (a) :"))

        b = int(input("Enter the imaginary Part (b) :"))

        print("YOU HAVE ENTERED Z = " , a , "+ i " , b)

        r = ((a*a) + (b*b))

        R = math.sqrt(r)

        angle = math.atan(b/a)

        print("Z in Polar Coordinate Format is : " , R , "\u2220 " , angle , "\u00b0")

    elif (c.lower() == 'p'):

        r = int(input("Enter the Magnitude(r) :"))

        theta = int(input("Enter the Angle Theta(\u03F4) :"))

        print("YOU HAVE ENTERED Z = ", r, "\u2220 ", theta , "\u00b0")

        u = r * math.cos(theta)

        v = r * math.sin(theta)

        print(" Z in Rectangular Coordinate Format is : " , u , " + i", v)

    elif (c.lower() == 'q'):

        print("THANK YOU AGAIN FOR USING THE PROGRAM ! GOOD BYE")

        break

    else:

        print("Enter Sensible Value")