What is the output of this code segment ?

Question

cout<<(3&&4);

Please explain how (a&&b) works...

Answer 1

The && operator checks whether all of its logical comparisons are true. In this case, you are asking whether 3 AND 4 are true. In C++, any value that is greater than zero is evaluated as true. So, you could write the following:
cout << (3 && 5 && 9 && 21 && 2) << endl;
//This will output 1

In C++, the value of 'true' is outputted as 1 and 'false' is outputted as 0.

cout << (3 && 4 && 0) << endl;
//This will output 0.

Answer 2

@Zeke Thanks..!
Really a helpful answer