chih.js

 let x= 20
 let y = 30
 let z = x+y
 let d = z*2
 console.log(d)


 let f =130
 let r = f % 10
 let w = r+ f
 console.log(w)

 let a = 20
 let n = 3
 let i = a * n
 console.log(i)

 let o = 100

 let q = o + 10

 let p = o % 10


 let t= o - 10
  q = 4
  t = 2
  p = 7
 let u = q*t*p
 let g = o/u

 console.log(u)
 console.log(g)

 let number = 5;
 let result = (number> 2)? true: false;
 console.log(result);

 let left_operand = 50
 let right_operand = 30
 let operator =  "/"

 if(operator == "+"){
     console.log(left_operand+ right_operand)

 }else if(operator == "-"){
     console.log(left_operand -right_operand)
 }else if(operator == "*"){
     console.log(left_operand *right_operand)
 }else if(operator == "/"){
     console.log(left_operand /right_operand)
 }

 let ans = console


using function



 function calc(x){
     function secondNumber(a){
         return a*x;
     }
     return secondNumber;
 }

 console.log(calc(3)(2));

 const calc = function(x){
     function secondNumber(a){
         return a*x;

     }
     return secondNumber;
 }
 console.log(calc(3)(2));

 function higherOrderFunction(func){
     console.log("higher functon")
     func();
 }

 function lowerOrderFunction(){
     console.log("lower function")
 }

 higherOrderFunction(lowerOrderFunction);

function greetings(greet){
    return function person(name){
        return `Hello, ${name}.${greet}`;
    }
}

console.log(greetings("Good morning!")("john"))