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// Move scilab to current file directory
[u,t,n] = file()
n = strcat(n)
file_name = basename(n)+fileext(n)
file_name = strcat(file_name)
ind=strindex(n,file_name)
path = part(n,1:ind-1)
chdir(path)
exec("Chapter_2.sci",-1)
pt = ["Hi Amit,",
"Hope you are doing fine. How about meeting at the train station this friday at 5 p.m. ? Please let me know if it is OK with you.",
"Regards.",
"Atul"]
disp("Plain-text message:")
disp("")
for i=1:length(length(pt))
printf("%s\n",strcat(pt(i)))
end
ct_full = list()
a = ascii('a')
z = ascii('z')
A = ascii('A')
Z = ascii('Z')
//Encryption using encrypt_caesar funtion from depenency file
for k = 1:length(length(pt))
ct = []
for i=1:length(pt(k))
x = ascii(part(pt(k,1),i:i))
if x>=A & x<=Z then
ct(k,i) = encrypt_caesar(part(pt(k),i:i))
elseif x>=a & x<=z then
c = convstr(part(pt(k),i:i),'u')
c = encrypt_caesar(c)
c = convstr(c,'l')
ct(k,i) = c
else
ct(k,i) = part(pt(k),i:i)
end
end
ct_full(k) = ct
end
disp("")
disp("Corresponding cipher-text message:")
disp("")
for i=1:length(ct_full)
printf("%s\n",strcat(ct_full(i)))
end
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