decl-var.swift

print("Hello World")

// using var keyword-->

var a = 12
print(a) // yaha rule hai ki jab apan variable me value assign karte hai tab hume pehle and baad me backspace rakhna padhega.

// var b =23--> yaha white space error aaega.

a = 23
print(a)

// 'let' keyword me likhi jaane wali values constant behave karti hai.

let b = 56
print(b)
print("the value of b is: ",b) // hum conactination use kar rahe hai .

// b = 78
//print(b)--> ab yaha error aaya hai kyu ki ab hum b ko koi doosri value assign nahi kar sakte.

// hum value assign kara sakte hai perticular data type ki for example see below:

var c: Int = 79
print(c)

// ab hum alag alag data type me var ki value assign karake print karenge:

var d: Double = 56.789346346346346
print(d)

var e: Float = 34.78235235325
print(e)

var f: String = "Krishna Apple"
print(f)

var g: Character = "A"
print(g)

var h: Bool = true
print(h)