text: let readlineSync=require("readline-sync")
  var age=readlineSync.questionInt("enter a any number---")
  // const age =19;
  if (age&&age>20)
  {
      console.log("age is 18")
  }
  else if (age===20)
  {
      console.log("age is 20")
  }
  else{
  
      console.log("age is not 18")
  
  }
  