a = 'A'
print('A\'s ascii code is', ord(a))

b = 66
print('ascii code', b, 'is', chr(b))

# char is string
c = 'h'
d = 'hello'

print('type of', c, 'is', type(c))
print('type of', d, 'is', type(d))

# concatenate
s1 = 'hello'
s2 = ' world'

print(s1+s2)

# special symbol

print('hello')
print('\'hello\'')