switch (current) {
            case (current >= 48 && current <= 57):
                if (Calc->LHValue == 0) {
                    Calc->LHValue = current - 48;
                } else if (Calc->LHValue != 0 && Calc->lastOperator == NULL) {
                    Calc->LHValue *= 10;
                    Calc->LHValue += current - 48;
                } else if (*(Calc->RHValue) == 0 && Calc->lastOperator != NULL) {
                    *(Calc->RHValue) = current - 48;
                } else if (*(Calc->RHValue) != 0 && Calc->lastOperator != NULL) {
                    *(Calc->RHValue) *= 10;
                    *(Calc->RHValue) += current -48;
                }
            case ('+'):
                Calc->lastOperator = current;
                Calc->prevResult = Calc->LHValue + *(Calc->RHValue);
                cout << Calc->prevResult << endl;
            case ('-'):
                Calc->lastOperator = current;
                Calc->prevResult = Calc->LHValue - *(Calc->RHValue);
                cout << Calc->prevResult << endl;
            case ('*'):
                Calc->lastOperator = current;
                Calc->prevResult = Calc->LHValue * *(Calc->RHValue);
                cout << Calc->prevResult << endl;
            case ('/'):
                if (*(Calc->RHValue) != 0) {
                    Calc->lastOperator = current;
                    Calc->prevResult = Calc->LHValue / *(Calc->RHValue);
                    cout << Calc->prevResult << endl;
                } else {
                    cout << "no 0 ples" << endl;
                    exit(1);
                }
            case ('=') :
                switch (Calc->lastOperator) {
                    case ('+'):
                        Calc->prevResult += *(Calc->RHValue);
                        cout << Calc->prevResult << endl;
                    case ('-'):
                        Calc->prevResult -= *(Calc->RHValue);
                        cout << Calc->prevResult << endl;
                    case ('*'):
                        Calc->prevResult *= *(Calc->RHValue);
                        cout << Calc->prevResult << endl;
                    case ('/'):
                        Calc->prevResult /= *(Calc->RHValue);
                        cout << Calc->prevResult << endl;
                }
        }