Encrypty thing created by ekyl - https://repl.it/K9KG/3

Encrypty thing.cpp

#include<iostream>
using namespace std;

char encryptChar(char c, int key) {
  key %= 52
  if (c < 65 || (c > 90 && c < 97) || c > 122) { // don't encrypt non-letters
    return c;
  }
  if (65 <= c && c <= 90 && c+key>90) { // handling the middle bit
      c += 7;
      key -= 1;
  }
  c += key;
  return (c - 65) % 58 + 65; //handling the edge bit
}

char decryptChar(char c, int key) {
  key %= 52
  if (c < 65 || (c > 90 && c < 97) || c > 122) { // don't attempt to decrypt non-letters
    return c;
  }
  if (97 <= c && c <= 122 && c-key<97) { // middle bit again
      c -= 7;
      key -= 1;
  }
  c -= key;
  if (c < 65) { //handling the other edge bit
    c += 58;
  }
  return c;
}

string encryptString(string s, int key) {
  string o = "";
  for (int i = 0; i < s.size(); i++) {
    o+=encryptChar(s[i],key);
  }
  return o;
}

string decryptString(string s, int key) {
  string o = "";
  for (int i = 0; i < s.size(); i++) {
    o+=decryptChar(s[i],key);
  }
  return o;
}


int main() {
  string in = "DANK MEMES AMIRITE and some lowercase yeet azAZ";
  string encrypted = encryptString(in,1);
  cout << encrypted << endl;
  string decrypted = decryptString(encrypted,1);
  cout << decrypted << endl;
}