I want the user to choose 5 options like you can see in the switch below in my code, but I have 39 errors and I can not see one of them!
Well i post the code here, i will continue to work on it but if you can show me my error that will give me a lot for my knowledge.

Thx You in advance!!!!!!!!

Code:
#include <iostream.h>
#include <conio.h>

int x;
int y;
int addit(int x, int y);
int soust(int x, int y);
int multi(int x, int y);
int divide(int x, int y);
int exit(int x, int y);

int main()
{
	int input;
	cout<<"1. "Add function"<<endl;
	cout<<"2. "Soustract function"<<endl;
	cout<<"3. "Multi function"<<endl;
	cout<<"4. "Divide function"<<endl;
	cout<<"5. "Exit"<<endl;
	cin>>input;
	cout<<"First number"<<endl;
	cin>>x;
	cout<<"Second number"<<endl;
	cin>>y;

	switch (input)
	{
	case 1: addit();
		addit(x,y);
		cout<<addit(x,y);
		break;
	case 2: soust();
		soust(x,y);
		cout<<soust(x,y);
		break;
	case 3: multi();
		mutli(x,y);
		break;
	case 4: divide();
		divide(x,y);
		cout<<divide(x,y);
		break;
	case 5: Exit();
		return 0;
		break;
	default:
		cout<<"Error, bad input, quitting");
	}
return 0;
}

int addit(int x,int y)
{
	return x+y;
}
int soust(int x,int y)
{
	return x-y;
}
int multi(int x,int y)
{
	return x*y;
}
int divide(int x,int y)
{
	return x/y;
}