from tkinter import*
from math import*

okno=Tk()
okno.title("06-2.B-14.11.2022")

def vymaz():
    vstup1.delete(0,END)
    vstup2.delete(0,END)
    vstup4.delete(0,END)

def euklid():
    a=int(vstup1.get())
    b=int(vstup2.get())
    while a!=0:
        if a>=b:
            a=a-b
        else:
            x=a
            a=b
            b=x   
    vstup4.delete(0,END)
    vstup4.insert(0,str(b))



text1=Label(okno,text="GTV PROGRAM 2.B")
text1.grid(row=0,column=0)

text2=Label(okno,text="a=")
text2.grid(row=1,column=0)

text3=Label(okno,text="b=")
text3.grid(row=2,column=0)


text5=Label(okno,text="Výsledok")
text5.grid(row=4,column=0)

vstup1=Entry(okno,width=10)
vstup1.grid(row=1,column=1)

vstup2=Entry(okno,width=10)
vstup2.grid(row=2,column=1)


vstup4=Entry(okno,width=10)
vstup4.grid(row=4,column=1)

tlac1=Button(okno,text="Ukončiť",width=10,command=okno.destroy)
tlac1.grid(row=5,column=0)

tlac2=Button(okno,text="Urob",width=10,command=euklid)
tlac2.grid(row=6,column=0)

tlac3=Button(okno,text="Vymaž",width=10,command=vymaz)
tlac3.grid(row=5,column=1)


okno.mainloop()