Compilare: user.cpp: In function ‘void extract(int)’: user.cpp:33:100: warning: operation on ‘poz[heap[fiu]]’ may be undefined [-Wsequence-point] poz[heap[tata]] = poz[heap[tata]] + poz[heap[fiu]] - (poz[heap[fiu]] = poz[heap[tata]]); ^ user.cpp:34:75: warning: operation on ‘heap[fiu]’ may be undefined [-Wsequence-point] heap[tata] = heap[tata] + heap[fiu] - (heap[fiu] = heap[tata]); ^ user.cpp: In function ‘void up(int, int)’: user.cpp:54:100: warning: operation on ‘poz[heap[fiu]]’ may be undefined [-Wsequence-point] poz[heap[tata]] = poz[heap[tata]] + poz[heap[fiu]] - (poz[heap[fiu]] = poz[heap[tata]]); ^ user.cpp:55:75: warning: operation on ‘heap[fiu]’ may be undefined [-Wsequence-point] heap[tata] = heap[tata] + heap[fiu] - (heap[fiu] = heap[tata]); ^ user.cpp: In function ‘void abc(int)’: user.cpp:71:64: warning: operation on ‘heap[e[aux]]’ may be undefined [-Wsequence-point] heap[1] = heap[e[aux]] + heap[1] - (heap[e[aux]] = heap[1]); ^