程序未响应问题

wo623deyingxiong 2009-06-04 12:39:17

写了一个中序表达式计算器，但是在按“=”按钮以后，出现程序未响应问题。而且在调试过程中，工程文件也损坏，晕倒。希望高手指出问题所在。下面是程序的主要代码：



void MySetWindowText(HWND hwnd,TCHAR* cInput,int idEditBox=IDC_EDT);

////////////////////////////////////////////////////////////////////////////////

//  Main_OnCommand

////////////////////////////////////////////变量声明 

int integer;

int a,b,res;

char op;

char cExpression[255];



Stack<char> sOperator;

Stack<int>  sInteger;

////////////////////////////////////////////////

void Main_OnCommand(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify)

{

	//Stack<char> s;

    switch(id)

    {

        case IDC_BTN0:MySetWindowText(hwnd,"0");break;

        case IDC_BTN1:MySetWindowText(hwnd,"1");break;

        case IDC_BTN2:MySetWindowText(hwnd,"2");break;

        case IDC_BTN3:MySetWindowText(hwnd,"3");break;

        case IDC_BTN4:MySetWindowText(hwnd,"4");break;

        case IDC_BTN5:MySetWindowText(hwnd,"5");break;

        case IDC_BTN6:MySetWindowText(hwnd,"6");break;

        case IDC_BTN7:MySetWindowText(hwnd,"7");break;

        case IDC_BTN8:MySetWindowText(hwnd,"8");break;

        case IDC_BTN9:MySetWindowText(hwnd,"9");break;

        

        case IDC_BTNPLUS    :MySetWindowText(hwnd,"+");break;

        case IDC_BTNMINUS   :MySetWindowText(hwnd,"-");break;

        case IDC_BTNMULTIPLY:MySetWindowText(hwnd,"*");break;

        case IDC_BTNDIVIDE  :MySetWindowText(hwnd,"/");break;

        case IDC_BTNLpar    :MySetWindowText(hwnd,"(");break;

        case IDC_BTNRpar    :MySetWindowText(hwnd,")");break;

        

       case IDC_BTNEQUALl://这里响应了“=”按键

        {

			ZeroMemory(cExpression,255);

			

       		GetWindowText(GetDlgItem(hwnd,IDC_EDT),cExpression,255);

   			stringWork(cExpression);				

			sOperator.push('#');

			int i=0;

			

			while(cExpression[i]!='#'||sOperator.retrieve()!='#')//当表达式和栈中元素均为'#'时。结束 

			{

				if(readInteger(cExpression,i,integer))

				{

					sInteger.push(integer);

					i++;//取下一个字符； 

				}

				else

				switch(PRICompare(sOperator.retrieve(),cExpression[i]))

				{

					case -1:

					{

						sOperator.push(cExpression[i]);

						i++;

					}

					break;

					case 0://脱括号，并接受下一字符 

					{

						sOperator.pop(op);

						i++;

					}

					break;

					case 1://退栈并将运算结果入栈。

					{

						sOperator.pop(op);

						

						sInteger.pop(b);

						sInteger.pop(a);

						

						calculate(op,a,b,res);

						

						sInteger.push(res);						

					}

					break;

					case 2:

					MessageBox(NULL,"表达式存在语法错误","语法错误",MB_ICONERROR||MB_OK);

					break;

					

					default:break; 

				}//end switch

			}//end while

			ZeroMemory(cExpression,255);

			itoa(sInteger.retrieve(),cExpression,10);

			SetWindowText(GetDlgItem(hwnd,IDC_EDT),cExpression);				 

        }

        		

        	break;

      	default:break;

    }



}



void MySetWindowText(HWND hwnd,TCHAR* cInput,int idEditBox)

{

	TCHAR cCurrent[255];

	ZeroMemory(cCurrent,255);

	

	GetWindowText(GetDlgItem(hwnd,idEditBox),cCurrent,255);

	lstrcat(cCurrent,cInput);

	

	SetWindowText(GetDlgItem(hwnd,idEditBox),cCurrent);

		

}

这是用到的辅助函数的声明：assist.h



#ifndef _ASSIST_H

#define _ASSIST_H



 int  ChtoInt(char p);

 int PRICompare(char oper1, char oper2);

bool readInteger(const char* cStr, int& index,int& iResult);

 void calculate(char oper,int a,int b,int& c);

 void stringWork(char* str);

 #endif

还有一个栈类，是一个模板，实现和声明都放到头文件里。还有就是我是再把readInteger函数第二个参数改成引用后，出现未响应问题的。

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