The 141 cipher of an input string of letters changes the letters whose index is even (note: zero is even) by shifting it one position to the right in the alphabet. Thus 'a' becomes 'b', 'b' becomes 'c, ., "' becomes 'a' If the index of a letter is odd then the letter is shifted four positions to the right, so'a' becomes 'e', 'b' becomes 'f ... w'becomes 'a, 'x' becomes 'b', etc. For example if the plaintext input is 'banana', the 141 encryted text is 'ceoeoe' Define a function called code141 () that takes a string input parameter consisting of lower case alphabetic characters and returns a string which is the 141 encryption of the input.

Code in C language. Follow instructions in photo. Use text provided as input.txt file. A1, A2 20294 Lorenzana Dr Woodland Hills, CA 91364 B1, B2 19831 Henshaw St Culver City, CA 94023 C1, C2 5142 Dumont Pl Azusa, CA 91112 D1, D2 20636 De Forest St Woodland Hills, CA 91364 A1, A2 20294 Lorenzana Dr Woodland Hills, CA 91364 E1, E2 4851 Poe Ave Woodland Hills, CA 91364 F1, F2 20225 Lorenzana Dr Los Angeles, CA 91111 G1, G2 20253 Lorenzana Dr Los Angeles, CA 90005 H1, H2 5241 Del Moreno Dr Los Angeles, CA 91110 I1, I2 5332 Felice Pl Stevenson Ranch, CA 94135 J1, J2 5135 Quakertown Ave Thousand Oaks, CA 91362 K1, K2 720 Eucalyptus Ave 105 Inglewood, CA 89030 L1, L2 5021 Dumont Pl Woodland Hills, CA 91364 M1, M2 4819 Quedo Pl Westlake Village, CA 91362 I1, I2 5332 Felice Pl Stevenson Ranch, CA 94135 I1, I2 5332 Felice Pl Stevenson Ranch, CA 94135 N1, N2 20044 Wells Dr Beverly Hills, CA 90210 O1, O2 7659 Mckinley Ave Los Angeles, CA 90001

Mention how to utilise Python's split function.

Can you please advise me as to how you would structure the code? Regards