//in js a. callback function is a function that is passed into another function as an argument

//this function can then be invoked at later stage of time;

//function printFirstname(firstname, cb){

// console.log(firstname)

// cb("Mahanta")

//}

///function Printlastname(lastname){

/// console.log(lastname)

//}

//printFirstname("Partha",Printlastname)//callback

//

const isEven=(n)=>{

return n%2==0;

}

let printresult=(evenfn,num)=>{

const isNumEven=evenfn(num)

console.log(`the number ${num} is an even number ${isNumEven}`)

}

printresult(isEven,19)