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| function ceaser
clc
x=input('Enter Input Text =','s');
len=length(x);
array=[];
input1=[];
key = input( 'Enter Key Value');
for i=1:len
input1(i)=x(i);
end
for i=1:len
array(i)=input1(i)+key;
%handling small alphabets
if array(i)>122 && input1(i)>=97
array(i)=array(i)-122;
array(i)=array(i)+96;
end
%handling capital alphabets
if array(i)>90 && input1(i)<=65
array(i)=array(i)-90;
array(i)=array(i)+64;
end
end
disp('Ecryption Result');
ENCRYPT = char(array)
for i=1:len
array(i)=array(i)-key;
%handling small alphabets in Decryption
if array(i)<=97 && input1(i)>=122
array(i)=97-array(i);
array(i)=123-array(i);
end
%handling capital alphabets
if array(i)<65 && input1(i)<=90
array(i)=65-array(i);
array(i)=91-array(i);
end
end
disp('Decryption Result');
DECRYPT = char(array) |
