Why does the error do not come out even though I input 0 or 5 and above? Someone? Can you explain how to use &&?

Question

#include <iostream>
using namespace std;

int main() {

int x, operation, y;
cout<< "Enter a Number"<< endl ;
cin>> x;
cin>> operation;
cin>> y;
if (operation<=0 && operation>=5)
{
cout<< "error" ;
}
if ( operation==1)
{
cout<< x+y ;
}
if ( operation==2)
{
cout<< x-y ;
}
if ( operation==3)
{
cout<< x*y ;
}
if ( operation==4)
{
cout<< x/y ;
}

return 0;
}

Answer 1

&& means AND.
A number cannot be <= 0 and >= 5 at the same time

Answer 2

You can use logical or operator instead.

Answer 3

I think at the line
if(operation <=0 && operation>=5)..

Wont work because a can not be less than or equal to 0 and also be greater than or equal to 5

So i think a work around could be using “OR” instead of “AND”

So changing
&& —> ||