# Zinseszins

from tkinter import *

def berechnen():
    k0 = float(entry1.get())
    p  = float(entry2.get())
    n  = int(entry3.get())
    kn = k0 * (1 + p/100)**n
    kn = round(kn,2) 
    ausgabe.config(text = 'Endkapital: ' + str(kn))
 
fenster = Tk()
fenster.title('Zinseszins')
fenster.geometry('500x300')
# fenster.resizable(True,0)

ausgabe = Label(fenster,
            bg='lightgrey', fg='purple',
            text='Endkapital', font=('Arial', 30))
ausgabe.place(x=10, y=200, width=400, height=50)

label1 = Label(fenster,
            bg='lightgrey',
            fg='purple',
            text='Anfangskapital',
            font=('Arial', 18))
label1.place(x=10, y=10, width=180, height=50)

label2 = Label(fenster,
            bg='lightgrey',
            fg='purple',
            text='Zinsfuß',
            font=("Arial", 18))
label2.place(x=200, y=10, width=100, height=50)

label3 = Label(fenster,
            bg='lightgrey',
            fg='purple',
            text='Laufzeit',
            font=("Arial", 18))
label3.place(x=310, y=10, width=100, height=50)

entry1 = Entry(fenster, bg='red', font=("Arial", 30))
entry1.place(x=10, y=70, width=180, height=50)

entry2 = Entry(fenster, bg='orange', font=("Arial", 30))
entry2.place(x=200, y=70, width=100, height=50)

entry3 = Entry(fenster, bg='yellow', font=("Arial", 30))
entry3.place(x=310, y=70, width=100, height=50)

button = Button(fenster, bg = 'green', text ='=',
                font = ("Arial", 30), command = berechnen)
button.place(x=10, y=130, width=100, height=50)