This is a C++ Program to implement Caesar Cipher Encryption algorithm. This is the simplest of all, where every character of the message is replaced by its next 3rd character.
Here is source code of the C++ Program to Implement Caesar Cypher. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.
using namespace std;
cout << "Enter cipertext and press enter to continue." << endl;
cout << "Enter blank line to quit." << endl;
string output = "";
for (int x = 0; x < input.length(); x++)
output += caesar(input[x]);
cout << output << endl;
while (!input.length() == 0);
} //end main
char caesar(char c)
c = toupper(c); //use upper to keep from having to use two seperate for A..Z a..z
c = (((c - 65) + 13) % 26) + 65;
//if c isn't alpha, just send it back.
$ g++ CaesarCipher.cpp $ a.out Enter cipertext and press enter to continue. Enter blank line to quit. Sanfoundry FNASBHAQEL Enter cipertext and press enter to continue. Enter blank line to quit. ------------------ (program exited with code: 0) Press return to continue
Sanfoundry Global Education & Learning Series – 1000 C++ Programs.