how to do one line condition c++ code example

Example 1: single line if c++

a = (x > y) ? z : y;

/* Same as */

if (x > y)
{
    a = z;
}
else
{
    a = y;
}

Example 2: 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