conditional operator in cpp

1//(expression 1) ? expression 2 : expression 3
2//If expression 1 evaluates to true, then expression 2 is evaluated.
3   int x, y = 10;
4
5   x = (y < 10) ? 30 : 40;
6   cout << "value of x: " << x << endl; //prints 40
7 
8   

1<condition> ? <true-case-code> : <false-case-code>;
2