#Function1 Welcome
input : FirstName & LastName
return : 'Welcome [FirstName] [LastName] to this website!'
#Function2 getProduct
input : ProductName & Absolute imageAddress & Price
return : Product Box HTML
#Function3 checkAge
input : age
return : if age >=18 true else false
#Function4 countryNameToCountryCode input : Country Name like 'Iran' return : Country code like '+98'