09.Login

function login(input) {
  let usrnm = input[0];
  let index = 1;
  let password = input[index++];
  let newString = "";
  let enterCounter = 0;

  for (let i = usrnm.length - 1; i >= 0; i--) {
    newString += usrnm[i];
  }

  while (newString !== password && enterCounter < 3) {
    enterCounter++;
    console.log("Incorrect password. Try again.");
    password = input[index++];
  }
  if (newString === password) {
    console.log(`User ${usrnm} logged in.`);
  } else {
    console.log(`User ${usrnm} blocked!`);
  }
}