from tkinter import*

def urob():
    try:
        a=int(vstup1.get())
        b=int(vstup2.get())
        c=int(vstup3.get())
        if a<b:
            x=a
            a=b
            b=x
        if a<c:
            x=a
            a=c
            c=x
        vystup1.delete(0,END)    
        vystup1.insert(0,str(a))
    except:
        vystup1.insert(0,"CHYBA")

def vymaz():
    vstup1.delete(0,END)
    vstup2.delete(0,END)
    vstup3.delete(0,END)
    vystup1.delete(0,END)
    

root=Tk()
root.title("03-program-2A")

text1=Label(root,text="GTV 13.10.2022")
text1.grid(row=0,column=0)

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

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

text4=Label(root,text="c = ")
text4.grid(row=3,column=0)

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

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

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

vstup3=Entry(root,width=10)
vstup3.grid(row=3,column=1)

vystup1=Entry(root,width=10)
vystup1.grid(row=4,column=1)

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

tlac2=Button(root,text="Urči max",width=10,command=urob)
tlac2.grid(row=6,column=0)

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









root.mainloop()