Two variables store strings that consist of a letter of the alphabet, a blank space, and a number (in the form ‘R 14.3’). Write a script that would initialize two such variables

Ch7Ex24.m

% Creates two strings in the form 'R 14.3', extracts

% the numbers, and adds them together

str1 = 'k 8.23';

str2 = 'r 24.4';

[letter1, rest] = strtok(str1);

num1 = str2num(rest);

[letter2, rest] = strtok(str2);

num2 = str2num(rest);

num1+num2

Cryptography, or encryption, is the process of converting plaintext 

(e.g., a sentence or paragraph), into something that should be 

unintelligible, called the ciphertext. The

reverse process is code-breaking, or cryptanalysis, which relies on 

searching the encrypted message for weaknesses and deciphering it 

from that point. Modern security systems are heavily reliant on these 

processes.