#include <iostream> using namespace std; int main() { int x=10; int y=x+++x+++x; cout<<y; return 0; }

Answer 1

y = x++ + x++ + x;
y = 10 + 11 + 12;
y = 33;

Answer 2

different compiler may have different interpretations.

evaluation from left to right side

x++ + x++ +x
10 + 11 + 12

evaluation from right to left side

x+ ++x + ++x
10 + 11 + 12

both produces 33 as result