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Lee · Guest

Hello, everybody,

I have a midterm question as follows, which I believe is UB. I think the statement
k=j*f(i,j) is similar to j*(--j), which leads to undefined behaviour (UB).
But our professor insists the only correct result is 4. Any comments?

int f(int i, int j)
{
if(j==1)
return i;
--j;
++i;
return k=j*f(i, j);
}

int main()
{
int n=4;
cout< return 0;
}

Thanks,

Lee

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