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typedef int HRESULT ; bool SUCCEEDED(HRESULT x){return(x)>=0;} HRESULT f(){return 0;} #define g f #define h f /********************************/ HRESULT fun() { HRESULT hr; SUCCEEDED(hr = f()) && SUCCEEDED(hr = g()) && SUCCEEDED(hr = h()); return hr; } /*---- or, if you'd prefer: ----*/ #define DO SUCCEEDED #define _ && SUCCEEDED #define OD (1); HRESULT more_fun() { HRESULT hr; DO (hr = f()) _ (hr = g()) _ (hr = h()) _ OD return hr; } int main(){ fun(); more_fun(); }
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