""" Purpose: demonstrate basic usage of string [] operator to look at
             individual characters.
"""

# Get three indices of user interest
reply = input( "Enter three indices: " )

i1, i2, i3 = reply.split()
i1 = int ( i1 )
i2 = int ( i2 )
i3 = int ( i3 )

# Initialize target string
s = "chrestomathics"

# [] are like backwards find() we start with an index and get a character/sequence

# Use the indices to pick off single characters from s
c1 = s[ i1 ]             # Grab character at index i1 in s
c2 = s[ i2 ]             # Grab character at index i2 in s
c3 = s[ i3 ]             # Grab character at index i3 in s
# string_name[ index ] where index is an integer will hand back the character at that index in string_name
# we'll grab more characters next time! it's called slicing
# we don't modify the string s at all, we just grab that letter and store it in c1,c2,c3

# Use the characters to make a new string
t = c1 + c2 + c3 # string concatenation - puts all the strings together without spaces

# Print the result
print()
print( t )