birth_year = input("Enter your birth year: ")
# the type conversion here is the int function which converts 
# the string produce in the input function and in to a interger
# making it usable to get the age vairable
age = 2020 - int(birth_year)
print(age)

# some functions to convert values
int()
float()
bool()
str()

# simple calculator

first = input("First: ")
second = input("Second: ")
result = float(first)+ float(second) 
print("Sum: " + str(result)
