Compilare: user.cpp: In function ‘void Evaluate()’: user.cpp:27:35: warning: operation on ‘top’ may be undefined [-Wsequence-point] A[top] += A[top--]; ^ user.cpp:31:35: warning: operation on ‘top’ may be undefined [-Wsequence-point] A[top] -= A[top--]; ^ user.cpp:35:35: warning: operation on ‘top’ may be undefined [-Wsequence-point] A[top] *= A[top--]; ^ user.cpp:39:35: warning: operation on ‘top’ may be undefined [-Wsequence-point] A[top] /= A[top--]; ^ user.cpp:18:9: warning: unused variable ‘i’ [-Wunused-variable] int i, top; ^ user.cpp: In function ‘void Transform()’: user.cpp:80:59: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(!Stack.empty() && priority[Expression[i]] <= priority[Stack.top()]) ^ user.cpp:80:84: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(!Stack.empty() && priority[Expression[i]] <= priority[Stack.top()]) ^