Why 13 ?

Question

Hello friends,

can someone please explain me why the output of this code is 13 ?

#include <iostream>
using namespace std;

int main() {
int x=5,i;
i=++x+x++;
cout<<i;
return 0;
}

thank you !

Answer 1

x is 5
(++x) x is 6 in this operation and next
+( x++) and x will be 7 AFTER the operation and next

so its like ++5+6++.

just check postincrements and the before increments

Answer 2

thanks 👍