Hi guys!
We all know of the FizzBuzz problem:

Write a program (any language) that prints from 1 to 100. For
the multiples of 3, print "Fizz"; for the multiples of 5, print
"Buzz"; for the multiples of both 3 and 5, print "FizzBuzz".

I have already implemented this program using "if, if..else clauses",
but I want to implement this using switch statement(s) instead.
The program I came up with is f***ed up on so many levels.
My program goes:

[center]// all headers and protocols duly observed

for (int i = 1; i <= 100; i++)
{
switch (i)

case 1:
( i % 15 == 0 );
cout << "FizzBuzz";
break;

case 2:
( i % 3 == 0 );
cout << "Fizz";
break;

case 3:
( i % 5 == 0 );
cout << "Buzz"
break;

default:
cout << i << ", ";
break;
}
[/center]
The program will now output FizzBuzz, 1, 2, 3, ... , 100. This is
not even qualified to be called "wrong". So any ideas on how I
solve this problem using switch statement?

PS: I used C++ for this, but any language that has switch construct
is highly welcomed. I just want to get the correct logic for solving
this.

Thanks for your time...

Were you specifically told to solve it using switch construct?
if yes, I wonder what the solution will be, myself.

I have been trying to work out a possible solution though,
but the problem is - to test if a number is even or odd, a boolean value will be returned, but a switch statement case can only check for integer values.

So, I am not quite sure that is possible.

Would love to see someone do this.

Don't need a switch statement.

for ($i = 1; $i <= 100; $i++) {
    $str = (($i % 3 == 0) ? "Fizz" : "" ) .  (($i % 5 == 0) ? "Buzz" : "" );
    echo ($str == "" ) ? "$i\n" : "$str\n";
}

omoelu1:
Were you specifically told to solve it using switch construct?
if yes, I wonder what the solution will be, myself.

I have been trying to work out a possible solution though,
but the problem is - to test if a number is even or odd, a boolean value will be returned, but a switch statement case can only check for integer values.

So, I am not quite sure that is possible.

Would love to see someone do this.

I was just curious to see if switch can perform the trick. Will certainly like to see someone with a solution though!

DonSegmond:
Don't need a switch statement.

for ($i = 1; $i <= 100; $i++) {
    $str = (($i % 3 == 0) ? "Fizz" : "" ) .  (($i % 5 == 0) ? "Buzz" : "" );
    echo ($str == "" ) ? "$i\n" : "$str\n";
}

You can't use "case" on an object . . . I might be wrong . . .

Interesting question.

Solved using JavaScript ... my favorite language

function do_fizzbuzz( input ){
  
  if( !input ) return false;
  
  var output;
  
  switch( true ){
      
    case (input % 15 === 0):      
      output = 'FizzBuzz';
    break;
      
    case (input % 3 === 0):      
      output = 'Fizz';
    break; 
    
    case (input % 5 === 0):      
      output = 'Buzz';
    break;
      
    default:
      output = input;
    break;
  }
  
  return output;
}

Link to solution in action: [url=http://jsbin.com/suvugeveta/edit?js%2Coutput]JSBIN[/url]

Metalzoa:
Interesting question.

Solved using JavaScript ... my favorite language

function do_fizzbuzz( input ){
  
  if( !input ) return false;
  
  var output;
  
  switch( true ){
      
    case (input % 15 === 0):      
      output = 'FizzBuzz';
    break;
      
    case (input % 3 === 0):      
      output = 'Fizz';
    break; 
    
    case (input % 5 === 0):      
      output = 'Buzz';
    break;
      
    default:
      output = input;
    break;
  }
  
  return output;
}

Link to solution in action: [url=http://jsbin.com/suvugeveta/edit?js%2Coutput]JSBIN[/url]

nice one. but this won't work in java

Metalzoa:
Interesting question.

Solved using JavaScript ... my favorite language

function do_fizzbuzz( input ){
  
  if( !input ) return false;
  
  var output;
  
  switch( true ){
      
    case (input % 15 === 0):      
      output = 'FizzBuzz';
    break;
      
    case (input % 3 === 0):      
      output = 'Fizz';
    break; 
    
    case (input % 5 === 0):      
      output = 'Buzz';
    break;
      
    default:
      output = input;
    break;
  }
  
  return output;
}

Link to solution in action: [url=http://jsbin.com/suvugeveta/edit?js%2Coutput]JSBIN[/url]

Nice

PHP Version

function fizzBuzz($input)
{
    
    switch ($input) {
        case $input % 15 === 0:
            print "fizzbuzz<br/>";
            break;
        
        case $input % 5 === 0:
            print 'buzz <br/>';
            break;
        
        case $input % 3 === 0:
            print 'fizz<br/>';
            break;
        
        default:
            print $input . "<br/>";
            break;
    }
}

function doFizzBuzz()
{
    foreach (range(1, 100) as $index) {
        fizzBuzz($index);
    }
}

doFizzBuzz();

Ruby

def fizzbuzz(num)
  case
  when num % 15 == 0 then "FizzBuzz"
  when num % 3  == 0 then "Fizz"
  when num % 5  == 0 then "Buzz"
  else num
  end
end

def fizz_buzz_to(limit)
  1.upto(limit).each do |num|
    puts fizzbuzz(num)
  end
end

fizz_buzz_to(100);

KazukiIto:
Hi guys!
We all know of the FizzBuzz problem:
[b]
Write a program (any language) that prints from 1 to 100. For
the multiples of 3, print "Fizz"; for the multiples of 5, print
"Buzz"; for the multiples of both 3 and 5

Do you want a version in Java?

This is a more dynamic method that accepts user input via variables:

<?php

$low = 1;
$high = 50;

class FizBuzz {

	public function PrintFizzBuzz($n) {

		global $low;
		global $high;

		switch ($n) {
			case (($n % 3 == 0) && ($n % 5 != 0)):
				echo $n . ' is a multiple of 3 ------fizz' . '<br>';
				break;

			case (($n % 5 == 0) && ($n % 3 != 0)):
				echo $n. ' is a multiple of 5---------buzz' . '<br>';
				break;

			case (($n % 3 == 0) and ($n % 5 ==0)):
				echo $n . '  is a multiple of 15-----------fizzbuzz' . '<br>';
				break;
			
			default:
				echo $n . '<br>';
				break;
		}

	}

	public function SupplyValues($low, $high) {

			foreach (range($low, $high) as $x) {
			 
			 	$this->PrintFizzBuzz($x);

			}

	}

}

$nairaland = new FizBuzz();
$nairaland->SupplyValues($low, $high);

?>

Jelo4kul:


Do you want a version in Java?

sure

Am not sure any of these codes above me would work, because basically Switches cannot have evaluated statements in the case statement. They must be statically evaluated

KazukiIto:
Hi guys!
We all know of the FizzBuzz problem:

Write a program (any language) that prints from 1 to 100. For
the multiples of 3, print "Fizz"; for the multiples of 5, print
"Buzz"; for the multiples of both 3 and 5, print "FizzBuzz".
I have already implemented this program using "if, if..else clauses",
but I want to implement this using switch statement(s) instead.
The program I came up with is f***ed up on so many levels.
My program goes:
[center]// all headers and protocols duly observed
for (int i = 1; i <= 100; i++)
{
switch (i)

case 1:
( i % 15 == 0 );
cout << "FizzBuzz";
break;

case 2:
( i % 3 == 0 );
cout << "Fizz";
break;

case 3:
( i % 5 == 0 );
cout << "Buzz"
break;

default:
cout << i << ", ";
break;
}
[/center]
The program will now output FizzBuzz, 1, 2, 3, ... , 100. This is
not even qualified to be called "wrong". So any ideas on how I
solve this problem using switch statement?

PS: I used C++ for this, but any language that has switch construct
is highly welcomed. I just want to get the correct logic for solving
this.

Thanks for your time...

Raypawer:
Am not sure any of these codes above me would work, because basically Switches cannot have evaluated statements in the case statement. They must be statically evaluated

Try it out before you comment. Stop thinking, Start acting.

Raypawer:
Am not sure any of these codes above me would work, because basically Switches cannot have evaluated statements in the case statement. They must be statically evaluated

But mine has a link to it working. Did you try the link?

[url=http://jsbin.com/suvugeveta/edit?js%2Coutput]JAVASCRIPT SOLUTION[/url]

Hey! hold it there, tried it with c# it never worked, that made me to read again on switch statement, that gave me the conclusion,

but for the later that worked on javascript,yes i should, js is interpreted not compiled, its actually a scripting language, it may also work on php and other scripting lang.

danvery2k6:

Try it out before you comment. Stop thinking, Start acting.

good for you, never saw it from js angle

Metalzoa:


But mine has a link to it working. Did you try the link?

[url=http://jsbin.com/suvugeveta/edit?js%2Coutput]JAVASCRIPT SOLUTION[/url]

Raypawer:
Hey! hold it there, tried it with c# it never worked

So, you can't paste the same code into another language and expect it to work. You have to tweak things to get it working.

what is this one talking about , i don't do copy and past of code, i tried the logic he explained using switch statement not copying and past. Am not that dumb if you are, the op used c++, i used the same logic with c#..

danvery2k6:


So, you can't paste the same code into another language and expect it to work. You have to tweak things to get it working.

Raypawer:
what is this one talking about , i don't do copy and past of code, i tried the logic he explained using switch statement not copying and past. Am not that dumb if you are, the op used c++, i used the same logic with c#..

But even that doesn't work because low level behavior in languages differ, so you can't copy the same logic without accounting for those differences.

For example in php, the case is it's own separate comparison and doesn't check back with what was inputted into the switch statement.

I didn't know this, so it didn't look like the php version would work to me. I tried it, it worked and I learned something new about php.

Just because a switch works one way in a language doesn't mean it works exactly the same way in another.

The way I see this program you have only 3 cases,
1. when modulus 3 gives 0
2. when modulus 5 gives 0
3. and when modulus 15 gives 0

so this cases are what u should switch

here is what i did

#include <iostream>
using namespace std;
int main(){
int cases=0;
for (int i = 1; i <= 100; i++)
{
//setting my cases
if(i%15==0)
{cases=3; }
else if(i%5==0)
{cases=2;}
else if(i%3==0)
{cases=1 ; }
//for those not meeting ur selection//
else{cases=0;}

switch (cases)
{
case 0:
cout <<i<<endl;
break;

case 1:
cout <<i<< "Fizz"<<endl;
break;

case 2:
cout <<i<< "Buzz" <<endl ;
break;

case 3:
cout <<i<< "FizzBuzz"<<endl;
break;

default:
cout << "how did i get here" << endl;
break;
}
}




return 0;
}

sunnico:
The way I see this program you have only 3 cases,
1. when modulus 3 gives 0
2. when modulus 5 gives 0
3. and when modulus 15 gives 0

so this cases are what u should switch

here is what i did

#include <iostream>
using namespace std;
int main(){
int cases=0;
for (int i = 1; i <= 100; i++)
{
//setting my cases
if(i%15==0)
{cases=3; }
else if(i%5==0)
{cases=2;}
else if(i%3==0)
{cases=1 ; }
//for those not meeting ur selection//
else{cases=0;}

switch (cases)
{
case 0:
cout <<i<<endl;
break;

case 1:
cout <<i<< "Fizz"<<endl;
break;

case 2:
cout <<i<< "Buzz" <<endl ;
break;

case 3:
cout <<i<< "FizzBuzz"<<endl;
break;

default:
cout << "how did i get here" << endl;
break;
}
}




return 0;
}

Isn't that cheating?

You're doing the work with an if / else struct then outputting the result via a switch.

help yourself by removing the word 'copy'. i tried the Logic witth c#. I just realized that the only compiled language for now that does that with switch is Golang..

Metalzoa:


But even that doesn't work because low level behavior in languages differ, so you can't copy the same logic without accounting for those differences.

For example in php, the case is it's own separate comparison and doesn't check back with what was inputted into the switch statement.

I didn't know this, so it didn't look like the php version would work to me. I tried it, it worked and I learned something new about php.

Just because a switch works one way in a language doesn't mean it works exactly the same way in another.

Metalzoa:


Isn't that cheating?

You're doing the work with an if / else struct then outputting the result via a switch.

Cheating!!! no its tweaking
well looking at d use of switch, normally ur program case would involve u including all possible consequences, meaning u wud be having more than 3 cases to define an output for. That way u wud be so righteous to write many case statement for ur program.
Thé problem is thé case statement requires à constant integer, so for ur program(in c++) its either u include all cases i.e when i=3,i=5,i=6,i=9,i=10, i=15,....which i tink is dumb
or u stick to ur if.. else if..

Raypawer:
what is this one talking about , i don't do copy and past of code, i tried the logic he explained using switch statement not copying and past. Am not that dumb if you are, the op used c++, i used the same logic with c#..

I never said you were dumb... If you are suggesting it, that's fine by me...