Caesar Cipher Encryption and Decryption
#include<iostream>
#include<string>
using namespace std;
int main(){
int i,j,k;
string s,t;
int key;
cout<<"Enter the key\n";
cin>>key;
cout<<"Enter the message\n";
cin>>s;
for(i=0;i<s.size();i++){
t+=(s[i]-'A'+key)%26+'A';
}
cout<<"\n\nEncrypted message is "<<t<<'\n';
return 0;
}
output:
Enter the key
2
Enter the message
iknowbro
Encrypted message is QSVWEJZW
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