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| ////Don't change this | |
| var aNumber = Int(readLine()!)! | |
| func dayOfTheWeek(day: Int) { | |
| //Write your code inside this function. | |
| switch day { | |
| case 1: | |
| print("Monday") | |
| case 2: | |
| print("Tuesday") | |
| case 3: | |
| print("Wednesday") | |
| case 4: | |
| print("Thursday") | |
| case 5: | |
| print("Friday") | |
| case 6: | |
| print("Saturday") | |
| case 7: | |
| print("Sunday") | |
| default: | |
| print("Error") | |
| } | |
| } | |
| //Don't change this | |
| dayOfTheWeek(day: aNumber) |
why the below code just couldn't work?
////Don't change this var aNumber = Int(readLine()!)! func dayOfTheWeek(day: Int) { //Write your code inside this function. switch aNumber { case aNumber == 1 : print("Monday") case aNumber == 2 : print("Tuesday") case aNumber == 3 : print("Wednesday") case aNumber == 4 : print("Thursday") case aNumber == 5 : print("Friday") case aNumber == 6 : print("Saturday") case aNumber == 7 : print("Sunday") default : print("Error") } } //Don't change this dayOfTheWeek(day: aNumber)
Your code did not work because you made it "==" instead of just "=". You also do not need to state "aNumber" after every case. So if you just made the switch statement to be
switch aNumber {
case = 1 : print("Monday") case = 2 : print("Tuesday")
and so forth then it would have worked.
This was my code and it was wrong
`////Don't change this
var aNumber = Int(readLine()!)!
func dayOfTheWeek(day: Int) {
switch aNumber {
case 1:
print("Monday")
case 2:
print ("Tuesday")
case 3:
print ("Wednesday")
case 4:
print ("Thursday")
case 5:
print ("Friday")
case 6:
print ("Saturday")
case 7:
print ("Sunday")
default:
print ("Error")
}
}
//Don't change this
dayOfTheWeek(day: aNumber)`
I had to come here to figure out what was wrong and she didnt start the cases at "0" which she says the programming world likes to do. And I started the week at Sunday lol.. but at least I got the logic behind it.
switch day {
case 1: print("Monday")
case 2:print("Tuesday")
case 3:print("Wednesday")
case 4:print("Thursday")
case 5:print("Friday")
case 6:print("Saturday ")
case 7:print("Sunday ")
default:print("Error")
}
////Don't change this
var aNumber = Int(readLine()!)!
func dayOfTheWeek(day: Int) {
//Write your code inside this function.
switch day {
case 5:
print("Friday")
case 1:
print("Monday")
case 2:
print("Tuesday")
case 3:
print("Wednesday")
case 4:
print("Thursday")
case 6:
print("Saturday")
case 7:
print("Sunday")
default:
print("error")
}
}
//Don't change this
dayOfTheWeek(day: aNumber)
why the below code just couldn't work?
////Don't change this var aNumber = Int(readLine()!)! func dayOfTheWeek(day: Int) { //Write your code inside this function. switch aNumber { case aNumber == 1 : print("Monday") case aNumber == 2 : print("Tuesday") case aNumber == 3 : print("Wednesday") case aNumber == 4 : print("Thursday") case aNumber == 5 : print("Friday") case aNumber == 6 : print("Saturday") case aNumber == 7 : print("Sunday") default : print("Error") } } //Don't change this dayOfTheWeek(day: aNumber)Your Code does not work because:
1.) You are trying to use an input parameter that is defined in repl.it in the console input. In repl.it the ' Int(readLine) ' keyword, tells you to put in a value for the parameter, in this case it is an Integer. To give the readLine a value, you'll have to click on the symbol at the upper right corner that looks like this:
2.) You are using for both, the switch and the case the same argument, this will definitely not work because it does not make any logical sense
You will have to use the input parameter of the function that you are calling at the bottom, which is of course "day". I'll explain you why, so that you can fully understand it.You have your function 'dayOfTheWeek' with an input parameter called 'day' that takes an Integer, right?
So, now we want to say that when the value of 'day' is equal to '1', we want to print "Monday", right?Now, the moment of truth:
When you write down the keyword 'switch' , it does not literally mean switch this thing.
It means:
for the thing you write after the switch keyword, in that case 'day' , you want do define some different 'cases', here it is the value for the day, and when the value of ' day ' is equal to ' 1 ' then it executes the code after ' case 1: '
so now we want to say: when the value of 'day' is 1 --> then print "Monday"So that's why the could for that would look like this:
`////Don't change this var aNumber = Int(readLine()!)! func dayOfTheWeek(day: Int) { switch day { case 1: print("Monday") case 2: print("Tuesday") case 3: print("Wednesday") case 4: print("Thursday") case 5: print("Friday") case 6: print("Saturday") case 7: print("Sunday") default: print("Error") } } //Don't change this dayOfTheWeek(day: aNumber)`Hope that i could help you with that one, don't suffer, programming is not easy at all.
Takes time, be patient :)
Great explanation.
I am curious, in which statements do you have to use the if statement vs the switch statement?
Here is my approach...-
////Don't change this
var aNumber = Int(readLine()!)!
func dayOfTheWeek(day: Int) {
//Write your code inside this function.
var theNumber = ["error", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]
switch day {
case ..<1:
print("Error")
case 8...:
print("Error")
case day:
print(theNumber[day])
default:
print("Error")
}
}
//Don't change this
dayOfTheWeek(day: aNumber)
Here is my approach...-
////Don't change this
var aNumber = Int(readLine()!)!func dayOfTheWeek(day: Int) {
//Write your code inside this function.
var theNumber = ["error", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]
switch day {
case ..<1:
print("Error")
case 8...:
print("Error")
case day:
print(theNumber[day])
default:
print("Error")
}
}//Don't change this
dayOfTheWeek(day: aNumber)
I would not suggest this solution as it can confused other people who are trying to read this. Make it simple and readable, don't overcomplicate things.
A simple switch statement like this should be enough for this challenge. It's more readable and understandable.
switch day {
case 1:
print("Monday")
case 2:
print("Tuesday")
case 3:
print("Wednesday")
case 4:
print("Thursday")
case 5:
print("Friday")
case 6:
print("Saturday")
case 7:
print("Sunday")
default:
print("Error")
}
func dayOfTheWeek(day: Int) {
switch day {
case 1:
print("Monday")
case 2:
print("Thuesday")
case 3:
print("Wednestday")
case 4:
print("Thursday")
case 5:
print("Friday")
case 6:
print("Sunday")
case 7:
print("Saturday")
default:
break
}
}
dayOfTheWeek(day: 5) // Friday
Hy Guys! That's my code, but didn't work, could someone help me?
I also tried switch day
Thanks!
switch aNumber {
case 0:
print("Sunday")
case 1:
print("Monday")
case 2:
print("Tuesday")
case 3:
print("Wednesday")
case 4:
print("Thursday")
case 5
print("Friday")
case 6:
print("Saturday")
default:
print("Error")
}
////Don't change this
var aNumber = Int(readLine()!)!
func dayOfTheWeek(day: Int) {
//Write your code inside this function.
switch aNumber{
case 1..<2:
print("Monday")
case 2..<3:
print("Tuesday")
case 3..<4:
print("Wednesday")
case 4..<5:
print("Thursday")
case 5..<6:
print("Friday")
case 6..<7:
print("Saturday")
case 7..<8:
print("Sunday")
default :
print("Error")
}
}
//Don't change this
dayOfTheWeek(day: aNumber)
Why do we need the statement : let aNumber = Int(readLine()!)! in every code? because whenever I apply it on my playground. It does not work and always show this.
When I take it out of my code, it works properly (as below). Can anyone please explain that to me? Many thanks!!
import UIKit
func dayOfTheWeek(day: Int) {
//Write your code inside this function.
switch day{
case 0 :
print("Monday")
case 1:
print("Tuesday")
case 2:
print("Wednesday")
case 3:
print("Thursday")
case 4:
print("Friday")
case 5:
print("Saturday")
case 6 :
print("Sunday")
default :
print("Error")
}
//Don't change this
dayOfTheWeek(day: 6)
I had a little fun with this ...
////Don't change this
func dayOfTheWeek(day: Int) {
//Write your code inside this function.
//Just to check what number this works out to
let wd = "Day \(day) of the week is"
let c = "Result of calculation = \(day%7) ="
//Translating 1...7 into a weekday
switch day {
case 1:
print("\(wd) Monday")
case 2:
print("\(wd) Tuesday")
case 3:
print("\(wd) Wednesday")
case 4:
print("\(wd) Thursday")
case 5:
print("\(wd) Friday")
case 6:
print("\(wd) Saturday")
case 7:
print("\(wd) Sunday")
//Translating any number above 7 into a weekday
default:
switch day%7 {
case 0:
print("\(c) Sunday")
case 1:
print("\(c) Monday")
case 2:
print("\(c) Tuesday")
case 3:
print("\(c) Wednesday")
case 4:
print("\(c) Thursday")
case 5:
print("\(c) Friday")
case 6:
print("\(c)Saturday")
default:
print("\(c)Judgementday")
}
}
}
dayOfTheWeek(day: 1)
dayOfTheWeek(day: 123456)
var aNumber = 3
func dayOfTheWeek(day: Int) {
switch day {
case 1:
print("Monday")
case 2:
print("Tuesday")
case 3:
print("Wednesday")
case 4:
print("Thursday")
case 5:
print("Friday")
case 6:
print("Saturday")
case 7:
print("Sunday")
default:
print("Error")
}
}
dayOfTheWeek(day: aNumber)
Why do we need the statement : let aNumber = Int(readLine()!)! in every code? because whenever I apply it on my playground. It does not work and always show this.
When I take it out of my code, it works properly (as below). Can anyone please explain that to me? Many thanks!!
I have the same question what does let aNumber = Int(readLine()!)! do? Thanks
why the below code just couldn't work?
////Don't change this var aNumber = Int(readLine()!)! func dayOfTheWeek(day: Int) { //Write your code inside this function. switch aNumber { case aNumber == 1 : print("Monday") case aNumber == 2 : print("Tuesday") case aNumber == 3 : print("Wednesday") case aNumber == 4 : print("Thursday") case aNumber == 5 : print("Friday") case aNumber == 6 : print("Saturday") case aNumber == 7 : print("Sunday") default : print("Error") } } //Don't change this dayOfTheWeek(day: aNumber)Your Code does not work because:
1.) You are trying to use an input parameter that is defined in repl.it in the console input. In repl.it the ' Int(readLine) ' keyword, tells you to put in a value for the parameter, in this case it is an Integer. To give the readLine a value, you'll have to click on the symbol at the upper right corner that looks like this:
2.) You are using for both, the switch and the case the same argument, this will definitely not work because it does not make any logical sense
You will have to use the input parameter of the function that you are calling at the bottom, which is of course "day". I'll explain you why, so that you can fully understand it.You have your function 'dayOfTheWeek' with an input parameter called 'day' that takes an Integer, right?
So, now we want to say that when the value of 'day' is equal to '1', we want to print "Monday", right?Now, the moment of truth:
When you write down the keyword 'switch' , it does not literally mean switch this thing.
It means:
for the thing you write after the switch keyword, in that case 'day' , you want do define some different 'cases', here it is the value for the day, and when the value of ' day ' is equal to ' 1 ' then it executes the code after ' case 1: '
so now we want to say: when the value of 'day' is 1 --> then print "Monday"So that's why the could for that would look like this:
`////Don't change this var aNumber = Int(readLine()!)! func dayOfTheWeek(day: Int) { switch day { case 1: print("Monday") case 2: print("Tuesday") case 3: print("Wednesday") case 4: print("Thursday") case 5: print("Friday") case 6: print("Saturday") case 7: print("Sunday") default: print("Error") } } //Don't change this dayOfTheWeek(day: aNumber)`Hope that i could help you with that one, don't suffer, programming is not easy at all.
Takes time, be patient :)
Ok so basically you're saying that 1.- not gonna work because it's like the input is not existing before we type in something so the structure of the program can't have a solid foundation to be ready for what we type in right? and then 2.- we can't assign aNumber as the name of the switch because we're mixing things up right?
My question then is in what moment we create a relation between "day" and "aNumber"?? that's what makes no logic for me. I get aNumber is declared at first as data type and used at the bottom to create the moment in which we can type something in but "day"?? how does it get a value?
Why do we need the statement : let aNumber = Int(readLine()!)! in every code? because whenever I apply it on my playground. It does not work and always show this.
When I take it out of my code, it works properly (as below). Can anyone please explain that to me? Many thanks!!
I have the same question what does let aNumber = Int(readLine()!)! do? Thanks
Let me try to answer,
The readLine() is used to read the input from the user, which is in this case is from the keyboard. So if you need an input from the keyboard, use this function. If not, just delete it and replace this code :
dayOfTheWeek(day: aNumber) to dayOfTheWeek(day: 5) // or whatever you want
In this case we need an input to match with the cases from switch statement, that's why we need readLine(). Since the readLine() will return an optional, we need to unwrap it.
For example :
let aNumber = readLine() // it will return optional on the terminal. When you type "hello" from the keyboard, it will return "optional(hello)".
To solve it, add "!" after parentheses.
let aNumber = readLine()! // it will unwrap the value, and return it instead of returning "optional(value)".
Because we need a number from the input, the code should like this :
let aNumber = Int(readLine()!)! // add "!" to unwrap the value, so it will not return an "optional(value)".
But why it still throw an error even the code is correct? That's because this readLine() function need a terminal to work, and Playground doesn't support it. Instead to create a playfround file, create a new macOS project and choose command line tool like this :
It will not show an error anymore because Command Line Tool support the terminal environment to read user input.
Hope it will help you 👍
Why do we need the statement : let aNumber = Int(readLine()!)! in every code? because whenever I apply it on my playground. It does not work and always show this.
When I take it out of my code, it works properly (as below). Can anyone please explain that to me? Many thanks!!
https://gist.github.com/TheMuellenator/ceed75150b5f7127c8bf38b3564e7ca3#gistcomment-3687911
Hope it will help you 👍
So basically I just did a reset on the challenge page and then just tried again.
Only use this.
switch day {
case 1:
print("Monday")
case 2:
print("Tuesday")
case 3:
print("Wednesday")
case 4:
print("Thursday")
case 5:
print("Friday")
case 6:
print("Saturday")
case 7:
print("Sunday")
default:
print("Error")
oh my....as usual it would give me errors again, while working in my playground....so came here to check...you all have the same, I mean this one is quite easy....in the end I didn't copy and paste the last }...(smacks own head)
This worked for me
{ switch day { case 1: print ("Monday")
case 2: print ("Tuesday")
case 3: print ("Wednesday")
case 4: print ("Thursday")
case 5: print ("Friday")
case 6: print ("Saturday")
case 7: print ("Sunday")
default: print ("Error")
}
}
////Don't change this
var aNumber = Int(5)
func dayOfTheWeek(day: Int) {
switch day {
case 1:print("Monday")
case 2:print("Tuesday")
case 3:print("Wednesday")
case 4:print("Thursday")
case 5:print("Friday")
case 6:print("Saturday ")
case 7:print("Sunday ")
default:print("Error")
}
}
//Try out some different numbers here
//Don't copy the line below into Udemy
dayOfTheWeek(day: 5)
////Don't change this
func dayOfTheWeek(day: Int) {
let day = Int.random(in: 1...7)
switch day {
case 1:
print("monday")
case 2:
print("tuseday")
case 3:
print("wansday")
case 4:
print("tuseday")
case 5:
print("friday")
case 6:
print("seterday")
case 7:
print("sunday")
default:
print("error")
}
}
dayOfTheWeek(day: 4)
//Try out some different numbers here
//Don't copy the line below into Udemy
I still keep getting error. what's wrong with my code?
var aNumber = Int(readLine()!)!
// Function to determine the corresponding day of the week. It takes an integer day as a parameter
func dayOfTheWeek(day: Int) {
switch day {
case 1:
print("Monday")
case 2:
print("Tuesday")
case 3:
print("Wednesday")
case 4:
print("Thursday")
case 5:
print("Friday")
case 6:
print("Saturday")
case 7:
print("Sunday")
default:
print("Error")
}
}
// We call the function with the user input integer aNumber as the argument and it prints the day of the week to the console
dayOfTheWeek(day: aNumber)
////Don't change this
var aNumber = Int(readLine()!)!
func dayOfTheWeek(day: Int) {
//Write your code inside this function.
switch(day) {
case 1:
print("Monday")
case 2:
print("Tuesday")
case 3:
print("Wednesday")
case 4:
print("Thursday")
case 5:
print("Friday")
case 6:
print("Saturday")
case 7:
print("Sunday")
default:
print("Error")
}
}
This is how I did it, it was super fun.
var aNumber = 1 // you can insert your own number here
func dayOfTheWeek(day: Int) {
let daysArray = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]
switch day {
case 1...daysArray.count:
print(daysArray[day - 1])
default:
print("Error")
}
}
dayOfTheWeek(day: aNumber)
Your Code does not work because:
1.) You are trying to use an input parameter that is defined in repl.it in the console input. In repl.it the ' Int(readLine) ' keyword, tells you to put in a value for the parameter, in this case it is an Integer. To give the readLine a value, you'll have to click on the symbol at the upper right corner that looks like this:
2.) You are using for both, the switch and the case the same argument, this will definitely not work because it does not make any logical sense
You will have to use the input parameter of the function that you are calling at the bottom, which is of course "day". I'll explain you why, so that you can fully understand it.
You have your function 'dayOfTheWeek' with an input parameter called 'day' that takes an Integer, right?
So, now we want to say that when the value of 'day' is equal to '1', we want to print "Monday", right?
Now, the moment of truth:
When you write down the keyword 'switch' , it does not literally mean switch this thing.
It means:
for the thing you write after the switch keyword, in that case 'day' , you want do define some different 'cases', here it is the value for the day, and when the value of ' day ' is equal to ' 1 ' then it executes the code after ' case 1: '
so now we want to say: when the value of 'day' is 1 --> then print "Monday"
So that's why the could for that would look like this:
Hope that i could help you with that one, don't suffer, programming is not easy at all.
Takes time, be patient :)