How to shift characters to ASCII values in a file based on user input c++ [closed]

by

A simple implementation of the Caesar Cipher is to use a string of valid characters and the remainder operator, %.

char Encrypt_Via_Caesar_Cipher(char letter, unsigned int shift)
{
  static const std::string vocabulary = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
  const std::string::size_type position = vocabulary.find(letter);
  char c = letter;
  if (position != std::string::npos)
  {
     const std::string::size_type length = vocabulary.length();
     c = vocabulary[(position + shift) % length];
  }
  return c;
}

More Related Contents:

  1. C++ Creating a parking charge
  2. How do I take values from text file and input into a 2D array? c++
  3. Read file line by line using ifstream in C++
  4. std::cin input with spaces?
  5. Read whole ASCII file into C++ std::string [duplicate]
  6. How do I read an entire file into a std::string in C++?
  7. Difference between files written in binary and text mode
  8. mmap() vs. reading blocks
  9. How to write a large buffer into a binary file in C++, fast?
  10. What is the idea behind ^= 32, that converts lowercase letters to upper and vice versa?
  11. Convert an int to ASCII character
  12. Read file-contents into a string in C++ [duplicate]
  13. Elegant ways to count the frequency of words in a file
  14. What is the most elegant way to read a text file with c++?
  15. How to identify the file content as ASCII or binary
  16. Why don’t the std::fstream classes take a std::string?
  17. What is the Fastest Method for High Performance Sequential File I/O in C++?
  18. checking for eof in string::getline
  19. C++ ifstream failbit and badbit
  20. How to read a file into vector in C++?
  21. Reading and writing a std::vector into a file correctly
  22. Read file names from a directory
  23. Intercept windows open file
  24. fstream won’t create a file [duplicate]
  25. Does C and C++ guarantee the ASCII of [a-f] and [A-F] characters?
  26. How to check if a file has been opened by another application in C++?
  27. How to count lines of a file in C++?
  28. How to convert a string of hex values to a string?
  29. Reading files larger than 4GB using c++ stl
  30. Performance Difference Between C and C++ Style File IO

Leave a Comment