What is the output after the following code executes?
int x=10; if ( ++x > 10 ) {
x = 13;
}
cout < < x;

13

Explanation:

First understand the meaning of ++x, it is a pre-increment operator.

it means, it increase the value first than assign to the variable.

For example:

x=10

then after executing  ++x, the value of x is 11.

it increase the value and assign to x.

In the question:

The value of x is 10. After that, program moves to the if condition and check for condition (++x > 10) means (11 > 10) condition true.

then, 13 assign to x.

After that value of x is printed as 13.