city

function solve(name, area, population, country, postcode){

    //name, area, population, country and postcode.

    let city = {
        name: name,
        area: area,
        population: population,
        country: country,
        postCode: postcode
    };



    for (let key in city) {
        console.log(`${key} -> ${city[key]}`)
    }

}