'''
Write an interactive python program to perform the following.
1.To input 2 integers and generate 1 random numbers.
2.To pass an integer argument and return the no: of digits.
3.To pass 2 integer argument and operator to perform operations of a calculator.
4.Exit
'''
import random
def generate():
     lw=int(input('Enter lower range'))
     up=int(input('Enter Upper range'))
     s=0
     for i in range(10):
          print(random.randint(lw,up),end='\\t')
def countdigit(n):
     c=0
     while n!=0:
          c+=1
          n//=10
     print('the number of digits is',c)
def calculator(a,op,b):
     if op=='+':
          s=a+b
          print('Sum is',s)
     elif op=='-':
          d=a-b
          print('Difference is',d)
     elif op=='*':
          m=a*b
          print('Multiplication is',m)
     elif op=='/':
          s=a+b
          print('Quotient is',qt)
n=int(input('Enter a number'))
a=int(input('Enter a number to calculator'))
b=int(input('Enter a number to calculator'))
op=input('Enter operator')
ch=0
while ch!=4:
    print("\n","-"*20)
    print("1.To input 2 integers and generate 1 random numbers\n2.To pass an integer argument and return the no: of digits.\n3.To pass 2 integer argument and operator to perform operations of a calculator.\n4.Exit")
    ch=int(input("Enter choice:"))
    if ch==1:
        generate()
    elif ch==2:
        countdigit(n)
    elif ch==3:
        calculator(a,op,b)
    elif ch!=4:
        print("INVALID CHOICE")