Compilare: user.cpp: In function ‘void SolvePlus()’: user.cpp:16:32: warning: operation on ‘VarSize’ may be undefined [-Wsequence-point] Var[VarSize-1]+=Var[VarSize--]; ^ user.cpp: In function ‘void SolveMinus()’: user.cpp:21:32: warning: operation on ‘VarSize’ may be undefined [-Wsequence-point] Var[VarSize-1]-=Var[VarSize--]; ^ user.cpp: In function ‘void SolveMultiply()’: user.cpp:26:32: warning: operation on ‘VarSize’ may be undefined [-Wsequence-point] Var[VarSize-1]*=Var[VarSize--]; ^ user.cpp: In function ‘void SolveDivide()’: user.cpp:31:32: warning: operation on ‘VarSize’ may be undefined [-Wsequence-point] Var[VarSize-1]/=Var[VarSize--]; ^ user.cpp: In function ‘int main()’: user.cpp:53:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%s",str+1); ^