Convert double to Char/

[prog_tom]

Hello, I'm trying to convert a double to a char. how to acomplish that?

double t=sqrt(10)
MessageBox(NULL,t,"",0);

Always gives me an error, cannot convert double to char. Please give advice on how to solve this. Also, when I'm trying to use strcpy and strcat

double t=sqrt(10)
char T[MAX_LENGTH];
strcpy(T,"Hello this number is: ");
strcat(T,t);

Won't work. How to solve this as well? Thanks.

[crptcblade]

#include <stdio.h>

//...
double t=sqrt(10)
char T[MAX_LENGTH];

sprintf(T,"%d", t)

//...

try that.

[prog_tom]

#include <windows.h>
#include "resource.h"
#define MAX 256
#define TIMER_10SEC 1
HWND dlg;
BOOL CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam){
double x=LOWORD(lParam),y=HIWORD(lParam);
SetTimer(hwnd,TIMER_10SEC,1000,NULL);
	switch(msg){
	case WM_INITDIALOG:
		MessageBox(hwnd,"'Look, I can be the meanest son of a ***** in this school!'","Mr. Olds says",MB_ICONEXCLAMATION|0);
		break;
	case WM_CLOSE:
		DestroyWindow(hwnd);
		PostQuitMessage(0);
		break;
			case WM_KEYDOWN:
		switch(wParam){
		case VK_ESCAPE:
			SendMessage(hwnd,WM_CLOSE,0,0);
			break;
		case VK_F1:
			MessageBox(NULL,"hey","",0);

			break;
		}	
		case WM_TIMER:
			switch(wParam){
			case TIMER_10SEC:
				MessageBox(NULL,"Ms. Van Norton Suk!","...",MB_ICONEXCLAMATION|0);
				break;
			}
			break;
	default:
		return 0;
	}
return TRUE;
}
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nShowCmd){
	MSG msg;
	dlg=CreateDialog(hInstance,MAKEINTRESOURCE(main_prog),NULL,WndProc);
	if(dlg==NULL){
		MessageBox(NULL,"Cannot create Windows, please recheck your system","From TZ",MB_ICONEXCLAMATION|0);
		return 0;
	}
		ShowWindow(dlg,nShowCmd);
		






			while(GetMessage(&msg,NULL,NULL,NULL)){
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
		return msg.wParam;

}

I want the Timer to be occured on the MAIN WINDOW, not the MessageBox. How?

[prog_tom]

Hello, every experts, I would like to know how to do this:

double Y=sqrt(10);
char X[MAX_LENGTH];
sprint(X,"%d",Y);
MessageBox(NULL,X,"",0);

When the messagebox pop up, it's something not sqrt of 10, and when I change 10 to 100, it gave me 0. What happened?

[parksie]

Use %f rather than %d.