Getting Started with Swift

//constant
let letStr = "Hello, playground"
print(letStr)

//variable
var str = "Hello, playground"
print(str)

for x in 1...9{
    for y in 1...9{
        print("\(x)*\(y)=" ,x*y)
    }
}

var rank = 59;
if(rank < 60){
    print("Additional test decision");
}

var todos = ["running","Task","clean up"]
for todo in todos {
    print(todo)
}

var dic = ["car":4,"自転car":2,"bike":2]
print(dic["bicycle"])

func areaOfTriangle(width:Int,height:Int){
    print(width * height / 2)
}
areaOfTriangle(width: 3, height: 4)

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