DAY ONE: DATATYPES

gistfile1.txt

//MARKS:- TYPES OF DATA

 // 1. String : they are combination of characters and it could be of million characters as the case maybe
 // string declaration
    var country = "Nigeria"            //first method is type inference: is when                                   //swift assing a datatype to variable or                                    //constant base on the type of value assign                                 //to the variable
    var nation: String                 //second method is type annotation method
        nation = "Nigeria"


//2. Integer: they are positive whole numbers
var age: Int
age = 25

//MARKS:- type safety is observe in swift and it simply means swift will not allow one to put values in a variable declared as Int into string variable
//age = "James Bond"         /* swift will throw up error since age                                   has been declared as an integer initially */

//3. FLOAT AND DOUBLE: these are use for decimal numbers and double is prefer to float because it holds more accuracy than float that is it can take more fractional digit than float
var latitude : Double
latitude = 36.1666677888          //36.1666677888    more accuracy

var longitude : Float
longitude = 36.1666677888         // 36.16667        less accuracy

//4. BOOLEAN: this is a data type that helps to set value to true, false or absolute
// Declaring variable as a boolean
var stayOutTooLate: Bool
stayOutTooLate = true
// it can also be declare this way
var comeHomeTooLate: Bool = true