What is the output? #include using namespace std; int main(){ int i=0; while(i++

Q: What is the output? #include using namespace std; int main(){ int i=0; while(i++<3) cout<<i; }

(C) 1234. Explanation: Loop checks i<3 with post-increment. Iterations: i=0 check(0<3 true), prints i=1; i=1 check(1<3 true), prints 2; i=2 check(2<3 true), prints 3; i=3 check(3<3 false), exits. But i is incremented before printing → 1,2,3. Then i becomes 4 at the check. Output: 1234.

Question

What is the output?
#include<iostream>
using namespace std;
int main(){
  int i=0;
  while(i++<3) cout<<i;
}

Accepted Answer

(C) 1234. Explanation: Loop checks i<3 with post-increment. Iterations: i=0 check(0<3 true), prints i=1; i=1 check(1<3 true), prints 2; i=2 check(2<3 true), prints 3; i=3 check(3<3 false), exits. But i is incremented before printing → 1,2,3. Then i becomes 4 at the check. Output: 1234.