Question about the output from a code

Question

Why the outcome of this code is not 4? Am I missing something?

#include <iostream>
using namespace std;

int f(int k){

k++;
return k;
}

int main()
{
int k{2};
k++; /*k=3*/
f(k); /*inside the function, it has k++,so k should be 4(?!)*/
cout<<k;
return 0;
}

Answer 1

oh I missed that. Thx xD