PHP-Fusion Powered Website - Articles: C++ Program to Implement Caesar Cipher

Users Online

· Guests Online: 108

· Members Online: 0

· Total Members: 188
· Newest Member: meenachowdary055

Forum Threads

Newest Threads

No Threads created

Hottest Threads

No Threads created

Latest Articles

· Do while loop
· The for loop in C
· C while loop
· Pointers in C
· Functions in C

Oh no! Where's the JavaScript?
Your Web browser does not have JavaScript enabled or does not support JavaScript. Please enable JavaScript on your Web browser to properly view this Web site,
or upgrade to a Web browser that does support JavaScript; Firefox, Safari, Opera, Chrome or a version of Internet Explorer newer then version 6.

Articles Hierarchy

Articles Home » C++ » C++ Program to Implement Caesar Cipher

C++ Program to Implement Caesar Cipher

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.

```
#include <iostream>
```
```
#include <string>
```
```
using namespace std;
```
```
char caesar(char);
```
```
int main()
```
```
{
```
```
    string input;
```
```
    do
```
```
    {
```

        cout << "Enter cipertext and press enter to continue." << endl;

        cout << "Enter blank line to quit." << endl;

```
        getline(cin, input);
```
```
        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)
```
```
{
```
```
    if (isalpha(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.

```
    return c;
```
```
}
```

Output:

$ 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

Users Online

Forum Threads

Latest Articles

Articles Hierarchy

C++ Program to Implement Caesar Cipher

C++ Program to Implement Caesar Cipher

Comments

Post Comment

Ratings