Why does sololearn complier post and error here?

Question

It says that there is an unqualified Id before ‘void’ in ShowX::void SetX(int y)

Here is the snap bit of code:

The full code is here: https://code.sololearn.com/cNA9f1f3kxO6/#cpp

#include <iostream>
using namespace std;

class ShowX // class function
{
public:
int GetX(){return x;}
void SetX(int y);

protected:
int x; // we have to use the functions above to use x
};

ShowX::void SetX(int y)
{
if(y < 0)
{
//the pointer throw
throw new string "Sorry, the value of X was smaller than 0, causing an Exception :(\n";
}
else if (y > 100)
{
//the value throw
throw y;
}
else
{
x = y;
}
}
I don't understand :|

Answer 1

Change following,
ShowX::void SetX(int y)

as follows,
void ShowX::SetX(int y)

I've also noticed two missing semicolons.

Answer 2

It seems after 4 days you managed to solve the problem but the errors were :

1 - Line 14 :
return type comes first and before function namespace or method class namespace.
14 : void ShowX::SetX(int y)

2 - Line 19 : Parenthesis around the string :
19: throw new string("Sorry, the value of X was smaller than 0, causing an Exception :(\n");
string is a constructor and ctors are also functions so they need parenthesis.

3 - Line 38 : missing semicolon after function call
try {myX.SetX(z);} // try the setx function

4 - Line 45: missing semicolon end of the line
cout << "The value of x is bigger than 100, causing an exception. :(";