Simple string encryption or decryption

Here we will write code for encryption of any given input to the different character.

Example: if user input a it will convert to e next 4 charactor
if user enter z it will convert to d

Suppose if user input abcxyz it will be converted to efgbcd

Below code snippet will do the same

var userInput = ReadLine().ToLower();
char[] array = new char[userInput.Length];

for (int i = 0; i < userInput.Length; i++)
  var current = (int)userInput[i];
  //97(a) to 122(z)
  if (current > 96 && current < 119)
	array[i] = (char)(current + 4);
  else if (current > 118 && current < 123)
	array[i] = (char)(current - 22);

4 thoughts on “Simple string encryption or decryption”

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