"""
how to use variable
"""

# define a variable
myname = 'Tom'
myage = 40
myschool = 'McGill'


# display the value
print(myname)

# update value
myname = 'John'
print(myname)


# assign value to a variable
myname = 'Jack'
print(myname)

#
a = 0
a = a + 10
print(a)










