MFC選修 計算器實驗報告

六、源程序清單、測試數據、結果主要代碼：//1-9與0的消息響應函數相同，如下：voidCCaculatorDlg::OnButton0(){ //TODO:Addyourcontrolnotificationhandlercodehere m_StrBegin=m_StrBegin+"0"; if(!m_IsCheckPoint) m_DspEdit.OnDisplay(m_StrBegin+"."); else m_DspEdit.OnDisplay(m_StrBegin);}//清除顯示框中內容voidCCaculatorDlg::OnButtonClr(){ //TODO:Addyourcontrolnotificationhandlercodehere m_IsCheckPoint=false; m_StrBegin=""; m_begin=0.0; m_end=0.0; m_bit=0; m_DspEdit.OnDisplay("0."); }//實現“+”運算，“-、*、/、平方、開方”等運算的消息函數大體相同voidCCaculatorDlg::OnButtonPlus(){ //TODO:Addyourcontrolnotificationhandlercodehere Result(); m_bit=1;}//核心函數：實現按鈕到顯示功能的中間計算過程VoidCCaculatorDlg::Result()//用來處理按下符號鍵時的函數，是計算的核心函數{m_IsCheckPoint=false; m_begin=atof(m_StrBegin);//將字符串轉化為浮點數，確保精度 switch(m_bit) { case1: //處理+號 m_end+=m_begin; break; case2: //處理-號 m_end-=m_begin; break; case3: //處理*號，即乘法 m_end*=m_begin; break; case4: //處理/號，即除法 if(m_begin==0) { m_DspEdit.OnDisplay("除數不能為零！"); return; } m_end/=m_begin; break; case5: //處理sqrt號，即開方 if(m_end<0) { m_DspEdit.OnDisplay("函數輸入無效！"); return; } m_end=sqrt(m_end); break; case6: //處理1/x號，即求倒數 m_end=1/m_end; case7: //處理=號 break; case8: //處理sin號 m_end=sin(m_end); break; case9: //處理cos號 m_end=cos(m_end); break; case10: //處理tan號 m_end=tan(m_end); break; case11: //處理x^2號，即平方 m_end=m_end*m_end; break; case12: //處理x^3號，即立方 m_end=m_end*m_end*m_end; break; case13: //處理x^y號，即求x的y次方 m_end=pow(m_end,m_begin); break; case14: //處理Exp號，即求e的x次方 m_end=exp(m_end); break; case15: //處理ln號 if(m_end<=0) { m_DspEdit.OnDisplay("函數輸入無效！"); return; } m_end=log(m_end); break; case16: //處理log號 if(m_end<=0) { m_DspEdit.OnDisplay("函數輸入無效！"); return; } m_end=log10(m_end); break; default: // m_end=m_begin; break; } m_begin=0.0; m_bit=0; m_StrBegin=""; inti=sprintf(m_buffer,"%10.12f",m_end);//將結果轉換為字符串 TrimZero(m_buffer,i);//去掉字符串尾部多余的零 m_DspEdit.OnDisplay(m_buffer);}//實現簡單和擴展計算器的切換功能voidCCaculatorDlg::OnExtend(){//功能拓展按鈕 //TODO:Addyourcommandhandlercodehere CRectrect; if(!m_IsExtend) { SetWindowPos(&wndTop,0,0,oldrect.Width(),oldrect.Height(),SWP_NOMOVE|SWP_NOZORDER); m_DspEdit.GetWindowRect(&rect); m_DspEdit.SetWindowPos(NULL,rect.left,rect.top,361,rect.Height(),SWP_NOMOVE|SWP_NOZORDER); m_DspStatic.GetWindowRect(&rect); m_DspStatic.SetWindowPos(NULL,rect.left,rect.top,381,rect.Height(),SWP_NOMOVE|SWP_NOZORDER); m_Menu->ModifyMenu(ID_EXTEND,MF_BYCOMMAND|MF_STRING,ID_EXTEND,"標準"); m_IsExtend=TRUE; } else { SetWindowPos(&wndTop,0,0,newrect.Width(),newrect.Height(),SWP_NOMOVE|SWP_NOZORDER); m_DspEdit.GetWindowRect(&rect); m_DspEdit.SetWindowPos(NULL,rect.left,rect.top,182,rect.Height(),SWP_NOMOVE|SWP_NOZORDER); m_DspStatic.GetWindowRect(&rect); m_DspStatic.SetWindowPos(NULL,rect.left,rect.top,202,rect.Height(),SWP_NOMOVE|SWP_NOZORDER); m_Menu->ModifyMenu(ID_EXTEND,MF_BYCOMMAND|MF_STRING,ID_EXTEND,"擴展"); m_IsExtend=FALSE; }}voidCCaculatorDlg::OnButtonDot(){//小數點的處理 //TODO:Addyourcontrolnotificationh