title: How can I change each character in a string to a specific symbol using C#?
body: <p>Basically, I have a string called data, which contains a sentence written by user input.</p>
  <p>I want to be able to output that exact sentence but with each letter in the sentence being changed to a symbol based on the letter. For example, the letter A will be changed to the “&amp;” symbol (random example).</p>
  <p>However, I can’t figure out how to scan the string and change each letter to the symbol. I’m not sure what approach to take and how to implement it. Thank you.</p>