Question

Using Swift, Write a program that reads in a string and passes to a function named parse(digit:) that takes a string with one character as parameter. The function should return -1 if the input is not a digit character and the digit otherwise. You must use a switch statement parse(digit: "1") // 1 parse(digit: "3") // 3 parse(digit: "a") // -1

Answer 1

func display(n: Character) -> Int {

/*check if n is alphabet character or not*/

if n>="a" && n<="z" || n>="A" && n<="Z" {

return -1 ;

}

else {/* if n is digit character*/

return 1;

}

}

print(display(n: "1"))

print(display(n: "2"))

print(display(n: "a"))

OUTPUT:

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