how to use and operator in if condition in c++ code example

Example: conditional operator in cpp

//(expression 1) ? expression 2 : expression 3
//If expression 1 evaluates to true, then expression 2 is evaluated.
   int x, y = 10;

   x = (y < 10) ? 30 : 40;
   cout << "value of x: " << x << endl; //prints 40