Retaining same amount of digits

Well, I have a number that I wish to stay at four digits and I have no idea as to how to keep an integer stick to such a scheme.

Code:

---

#include <stdio.h>

int main(void)
{
    int number = 0000;
        for ( ; number < 1000 ; number++)
    {
        printf("&#37;d\n", number);
    }

    return 0;

}

---

It should come out like this;

Code:

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0000
0001
0002
0003
0004
0005
0006
0007
0008
0009
0010

---

Yet it comes out like this;

Code:

---

1
2
3
4
5
6
7
8
9
10

---

Any assistance would be appreciated :)

Try using "%04d" instead of just "%d"

Look up a reference to printf, often done today by entering "man printf" into your favorite search engine. The result will be that you will use "%04d" instead of "%d".

Worked great :) Thank you to all who answered my question! I have one last one before I run off into the shadows :P How do I implement this with a WinAPI? (e.g. MessageBoxA)

Code:

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char buff[64]; // big enough...

// loop
sprintf(buff, "%04d", number);
MessageBox(hwnd, buff, "LOOK!", MB_OK);
// end loop ;)

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Quote:

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Originally Posted by int3

Worked great :) Thank you to all who answered my question! I have one last one before I run off into the shadows :P How do I implement this with a WinAPI? (e.g. MessageBoxA)

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Use sprintf() to format the data into a string like this:

Code:

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char digits[5]; /* Space for 4 digits plus null terminator */
sprintf(digits, "%04d", value);

---

Then pass the "digits" string to the message box call.

Doesn't work, thanks for the replies however :)

Code:

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sprintf(buff, "%04d", spam);
PostMessage((HWND) msWin, WM_CHAR, buff,(LPARAM)0);

---

Quote:

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invalid conversion from `char*' to `WPARAM'
initializing argument 3 of `BOOL PostMessageA(HWND__*, UINT, WPARAM, LPARAM)'

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Code:

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PostMessage((HWND) msWin, WM_CHAR, (WPARAM) (char *)buff, (LPARAM) 0);

---

Thanks again zacs7! (second time you've helped me)

Now the code parses correctly with no errors but it doesn't actually output anything :P

Code:

---

#include <stdio.h>
#include <windows.h>

HANDLE msWin;

DWORD pID = 0;
DWORD buf = 0;
DWORD memAddr = 0x007D4E28;

int main(void)
{
    int number = 0000;
    printf("Enter the number at which you wish to start at\n");
    scanf("&#37;04d", &number);
    HWND mWin = FindWindow(NULL, "Untitled - Notepad");
    if(mWin) {
            printf("Started spamming.\n");
            char buff[5];
            DWORD wTP = GetWindowThreadProcessId(mWin, &pID);
            msWin = OpenProcess(PROCESS_ALL_ACCESS, 0, pID);
            for (; number < 9999 ;)
            {
            Sleep(10);
            ReadProcessMemory(msWin, (LPVOID)memAddr, (LPVOID)&buf, 2, NULL);
            if ( buf != 0 ) {
                      printf("Died?");
                      system("PAUSE");
                      }
            else { 
                      sprintf(buff, "%04d", number);
                      PostMessage((HWND) msWin, WM_CHAR, (WPARAM) (char *)buff, (LPARAM) 0);
                      PostMessage((HWND) msWin, WM_CHAR, VK_RETURN,(LPARAM)0);   
                      number =+ 1;
            }
            }
    else {
        printf("Victim not found D:\n");
        system("PAUSE");
        return 0;
        }
}

---

Any ideas?

Your not asking it it output anything ?

Your just sending WM_CHAR (buff, 0) to the window that you find. Who's to say your going to get any output?

Also:

Code:

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int number = 0;

---

as 0000 == 0...

Don't name 2 different variables buff and buf, its confusing. To make sure the loop is running as you want:

Code:

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// blah..
sprintf(buff, "%04d", number);
printf("buff is: %s\n", buff);
PostMessage((HWND) msWin, WM_CHAR, (WPARAM) (char *)buff, (LPARAM) 0);
PostMessage((HWND) msWin, WM_CHAR, VK_RETURN,(LPARAM)0);   
number =+ 1;
//.. blah

---

zacs7, thanks for you ongoing support but it appears I made a typo :P

The program doesn't input anything into the window/application I specified.

This is more Windows related. But once you've found the window, I think you need to pinpoint the control...

Dunno haven't done windows programming in a while.

EDIT: Oopsies, wrong Windows message

I'm pretty sure it isn't, nonetheless I think I have pin-pointed my problem. Will be back to tell results D:

Well I was wrong... So your really sending different virtual keys (between [0, 9999) ?)

Dunno what you plan to achieve by that?

zacs7, I plan to make a small program that will combat my friend's program :P (reasoning behind it)

I noticed a small but in the dialog which was having messages posted to it. (msWin to mWin) I still have the same problems however :(

WM_CHAR takes a virtual key, NOT text...

Quote:

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Originally Posted by MSDN

This message is posted to the window with the keyboard focus when a WM_KEYDOWN message is translated by the TranslateMessage function. WM_CHAR contains the character code of the key that was pressed.

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You will need to use a custom message for custom input. WM_USER is made for that task. Don't use any of the messages with a specific task because the default window procedure might cause your program to behave strange.
Also I'm not sure how WPARAM and LPARAM are defined but whenever a pointer is to be passed in a message in Windows API it usually goes in LPARAM (such as with WM_SETTEXT) so WPARAM might not be designed to be able to handle pointers.