while True: u=input('che amali mikhahid ( + - * / ** //) : ') n1=int(input('adad aval ra vared konid : ')) n2=int(input('adad dovom ra vared konid : ')) if n1<n2: q=n1 n1=n2 n2=q if u=='+': v=n1+n2 elif u=='-': v=n1-n2 elif u=='*': v=n1*n2 elif u=='/': v=n1/n2 elif v=='**': v=n1**n2 elif v=='//': v=n1//n2 else: print(' lotfan az amalgard hayeh taeen shodeh estefadeh konid ') print("") print(n1,u,n2,' = ',v) print("") s=input(' aya mikhahid edameh dahid?') if s!='y': print(' Bye') break