Ad:

C++ Discussion Thread
Marked Solved
Views: 1468

Dec 7th, 2007

Variable problem..

Expand Post »

Can i know what's wrong with the below source code? can i put the variable x, y like this? How it can't work?

c++ Syntax (Toggle Plain Text)
#include <Windows.h>
#include <mmsystem.h>
#pragma comment (lib,"winmm.lib")
 
int ,x,y;
void CTestingDlg::OnPlay() 
{
	// TODO: Add your control notification handler code here
 
                UpdateData(TRUE);
 
	CString strFreq;
	CString strHL;
 
	strFreq = m_strFreq;
	strHL = m_strHL;
 
	strFreq.MakeUpper();
	strHL.MakeUpper();
 
	if(strFreq=="x" && strHL=="y")
		   PlaySound("x_y_2.wav",NULL,SND_FILENAME);
 
}
#include <Windows.h>
#include <mmsystem.h>
#pragma comment (lib,"winmm.lib")

int ,x,y;
void CTestingDlg::OnPlay() 
{
	// TODO: Add your control notification handler code here
			
                UpdateData(TRUE);

	CString strFreq;
	CString strHL;

	strFreq = m_strFreq;
	strHL = m_strHL;
	
	strFreq.MakeUpper();
	strHL.MakeUpper();

	if(strFreq=="x" && strHL=="y")
		   PlaySound("x_y_2.wav",NULL,SND_FILENAME);

}

Last edited by Ancient Dragon; Dec 7th, 2007 at 7:33 am. Reason: add code tags

Similar Threads

Variable Problem in Visual Basic 4 / 5 / 6
Losing session variable problem...help! in ASP
Defining Variable problem in Visual Basic 4 / 5 / 6
Ie Variable Passing Problem**please Help** in Web Browsers
c++ compiling problem in C++

lifei

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

11 posts
since Nov 2007

Permalink

Dec 7th, 2007

Re: Variable problem..

what makes you think you can compare integers and strings ? Ain't going to work. If the strings contain numeric digits then convert them to integers before doing the comparison.

Ancient Dragon

Sponsor

Team Colleague

Featured Poster

Reputation Points: 5608

Solved Threads: 2282

Retired and Enjoying Life

Online

21,947 posts
since Aug 2005

Permalink

Dec 7th, 2007

Re: Variable problem..

if it is necessary to used the variable, how should i write?

lifei

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

11 posts
since Nov 2007

Permalink

Dec 7th, 2007

Re: Variable problem..

Are you new to c and c++ languages? You are asking a 1st semester student type of question. If you are then attempting to write an MFC program is way beyond your current level of knowledge. Get an introduction to computer programming book and start studying from page 1. Then in a year or so you will be ready for that MFC program.

Ancient Dragon

Sponsor

Team Colleague

Featured Poster

Reputation Points: 5608

Solved Threads: 2282

Retired and Enjoying Life

Online

21,947 posts
since Aug 2005

Permalink

Dec 21st, 2007

Re: Variable problem..

Click to Expand / Collapse Quote originally posted by lifei ...

Can i know what's wrong with the below source code? can i put the variable x, y like this? How it can't work?
c++ Syntax (Toggle Plain Text)
#include <Windows.h>
#include <mmsystem.h>
#pragma comment (lib,"winmm.lib")
 
int ,x,y;
void CTestingDlg::OnPlay() 
{
	// TODO: Add your control notification handler code here
 
                UpdateData(TRUE);
 
	CString strFreq;
	CString strHL;
 
	strFreq = m_strFreq;
	strHL = m_strHL;
 
	strFreq.MakeUpper();
	strHL.MakeUpper();
 
	if(strFreq=="x" && strHL=="y")
		   PlaySound("x_y_2.wav",NULL,SND_FILENAME);
 
}
#include <Windows.h> #include <mmsystem.h> #pragma comment (lib,"winmm.lib") int ,x,y; void CTestingDlg::OnPlay() { // TODO: Add your control notification handler code here UpdateData(TRUE); CString strFreq; CString strHL; strFreq = m_strFreq; strHL = m_strHL; strFreq.MakeUpper(); strHL.MakeUpper(); if(strFreq=="x" && strHL=="y") PlaySound("x_y_2.wav",NULL,SND_FILENAME); }

a ) CString to int :

CString csNumber = "3";
int x;
x = atoi(csNumber); //defined in <cstdlib>

b) int to CString

int x = 23;
CString csNumber;
csNumber.format("%d", x);

This will do .....

Make urself comfortable with basic C++ before moving into MFC ....

Aashath

Reputation Points: 11

Solved Threads: 5

Newbie Poster

Offline

18 posts
since Dec 2007

Permalink

Dec 21st, 2007

Re: Variable problem..

You have an extra comma (',') before the x... Is that your question, and is that even a problem?

Brent.tc

Reputation Points: 10

Solved Threads: 1

Junior Poster in Training

Offline

90 posts
since Oct 2006

Permalink

Dec 23rd, 2007

Re: Variable problem..

I think the address befor var may be the reason

kunals

Reputation Points: 10

Solved Threads: 1

Newbie Poster

Offline

1 posts
since Dec 2007

Permalink

Dec 23rd, 2007

Re: Variable problem..

(Toggle Plain Text)

int ,x,y;

Delete the comma.

C++ Syntax (Toggle Plain Text)
strFreq.MakeUpper();
strHL.MakeUpper();
 
if(strFreq=="x" && strHL=="y")
strFreq.MakeUpper();
strHL.MakeUpper();

if(strFreq=="x" && strHL=="y")

You made those strings into upper-case and then you compare it with lower-case string.

invisal

Reputation Points: 350

Solved Threads: 63

Posting Pro

Offline

562 posts
since Mar 2005

This thread is solved

Either the thread starter or a moderator has marked this thread as solved. You can most likely trust the responses and answers given. There is most likely no reason for any further responses to be posted here. If you have a related question, please start a new thread in this forum instead.

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in C++ Forum Timeline: Visual C++ 08 Express compiling issues...

Next Thread in C++ Forum Timeline: Need help - C++ program to determine area of triangle NOT using fstream

DaniWeb Message

Cancel Changes

User Name
Password