''' Purpose: continue string manipulation introduction
'''

print()

# operator + when given two string operands produces their concatenation;
# i.e., a new string that is formed by running the two operands together

print( "### operator + performs concatenation" )

a = "fire"
b = "fighter"
c = a + b # 'fire'+'fighter' -> 'firefighter' (concatenated strings)

print( "a =",     a )
print( "b =",     b )

print()

print( "a + b =", c )

print()

# operator * when one of its operands is a string and the other is an integer,
# produces a new string that is a repeated concatenation of string operand
# indicated by the integer

print( "### * operator produces repeated concatenation" )

m  = "Wahoo-Wah!"
n  = 3

# mn is "Wahoo-Wah!"*3 and nm is 3*"Wahoo-Wah!" and it does the same thing (order doesn't matter)
mn = m * n # 'Wahoo-Wah!Wahoo-Wah!Wahoo-Wah!' (glues multiple copies of the string together)
nm = n * m # 'Wahoo-Wah!Wahoo-Wah!Wahoo-Wah!'

print( "m = ",     m )
print( "n = ",     n )

print()

print( "m * n =",     nm )
print( "n * m =",     nm )