Question

write code in win32 c++ to appear dialog box to enter the number and test if the number is prime or not and compute factorial and is the number is perfet or not ,
this dialog box contain static text name is the text "enter the number" and the side edit box name is box and below of the dialog 3 button
the first button test is prime or not
and the second button compute the factorial of number
and the third button is perfect number or not

Answer 1

Answer on Question #60303, Programming & Computer Science / C++

Question:

write code in win32 c++ to appear dialog box to enter the number and test if the number is prime or not and compute factorial and is the number is perfect or not, this dialog box contains static text name is the text "enter the number" and the side edit box name is box and below of the dialog 3 button:

the first button test is prime or not

and the second button compute the factorial of number

and the third button is perfect number or not

Solution:

#define _CRT_SECURE_NO_WARNINGS
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <tchar.h>
#include <cmath>
#define IDC_BTN_1 1
#define IDC_BTN_2 2
#define IDC_BTN_3 3
// Global variables
// The main window class name.static TCHAR szWindowClass[] = _T("win32app");
// The string that appears in the application's title bar.static TCHAR szTitle[] = _T("Win32 Guided Tour Application");
static TCHAR szWindowClass[] = _T("win32app");
static TCHAR szTitle[] = _T("Win32 Guided Tour Application");
HINSTANCE hInst;
HWND hStatic = 0, hEdit = 0, hBtn1 = 0, hBtn2 = 0, hBtn3 = 0;
// Forward declarations of functions included in this code module:
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
    WNDCLASSEX wcex;
    wcex.cbSize = sizeof(WNDCLASSEX);
    wcex.style = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc = WndProc;
    wcex.cbClsExtra = 0;
    wcex.cbWndExtra = 0;
    wcex.hInstance = hInstance;
    wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_APPLICATION));
    wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
    wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
    wcex.lpszMenuName = NULL;
    wcex.lpszClassName = szWindowClass;
    wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_APPLICATION));
    if (!RegisterClassEx(&wcex))
    {
        MessageBox(NULL,
        _T("Call to RegisterClassEx failed!"),
        _T("Win32 Guided Tour"),
        NULL);
        return 1;
    }
    hInst = hInstance; // Store instance handle in our global variable
    // The parameters to CreateWindow explained:
    // szWindowClass: the name of the application
    // szTitle: the text that appears in the title bar
    // WS_OVERLAPPEDWINDOW: the type of window to create
    // CW_USEDEFAULT, CW_USEDEFAULT: initial position (x, y)
    // 500, 100: initial size (width, length)
    // NULL: the parent of this window
    // NULL: this application does not have a menu bar
    // hInstance: the first parameter from WinMain
    // NULL: not used in this application
    HWND hWnd = CreateWindow(
        szWindowClass,
        szTitle,
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT,
        380, 300,
        NULL,
        NULL,
        hInstance,
        NULL
    );
    if (!hWnd)
    {
        MessageBox(NULL,
        _T("Call to CreateWindow failed!"),
        _T("Win32 Guided Tour"),
        NULL);
        return 1;
    }
    ShowWindow(hWnd,
    nCmdShow);
    UpdateWindow(hWnd);
    // Main message loop:
    MSG msg;
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return (int)msg.wParam;
}
BOOL IsPrime(LONG value) {
    if (value == 2 || value == 3 || value == 5 || value == 7) return TRUE;
    if (value % 2 == 0 || value == 1) return FALSE;
    LONG n = sqrt(value) + 1;
    for (int i = 3; i <= n; i += 2) {
        if (value % i == 0) return FALSE;
    }
    return TRUE;
}
LONG64 Factorial(LONG64 value) {
    if (value < 0) return -1;
    if (value == 0 || value == 1) return 1;
    return value * Factorial(value - 1);
}
BOOL IsPerfect(LONG value) {
    if (value < 0) return FALSE;
    LONG sum = 0;
    for (int i = 1; i < value; ++i) {
        if (value % i == 0) sum += i;
    }
    return value == sum;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    PAINTSTRUCT ps;
    HDC hdc;
    TCHAR greeting[] = _T("Hello, World!");
    HINSTANCE hInstance = hInst;
    switch (message)
    {
        case WM_CREATE:
        {
            hStatic = CreateWindow(L"Static", NULL, WS_CHILD | WS_VISIBLE | ES_LEFT, 10, 10, 120,
            30, hWnd, NULL, hInstance, NULL);
            SetWindowText(hStatic, L"Enter the number: ");
            hEdit = CreateWindow(L"Edit", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT, 140,
            10, 140, 30, hWnd, NULL, hInstance, NULL);
            hBtn1 = CreateWindow(L"Button", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT, 140,
            50, 140, 30, hWnd, (HMENU)IDC_BTN_1, hInstance, (LPVOID*)IDC_BTN_1);
            hBtn2 = CreateWindow(L"Button", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT, 140,
            90, 140, 30, hWnd, (HMENU)IDC_BTN_2, hInstance, (LPVOID*)IDC_BTN_2);
            hBtn3 = CreateWindow(L"Button", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT, 140,
            130, 140, 30, hWnd, (HMENU)IDC_BTN_3, hInstance, NULL);
            SetWindowText(hBtn1, L"Prime test");
            SetWindowText(hBtn2, L"Compute factorial");
            SetWindowText(hBtn3, L"Perfect test");
        }
        break;
        case WM_COMMAND:
        {
            int ControlID = LOWORD(wParam);
            int MessageType = HIWORD(wParam);
            char buff[256] = { 0 };
            GetWindowTextA(hEdit, (LPSTR)buff, 256);
            LONG value = atoi(buff);
            if (ControlID == IDC_BTN_1) {
                if (IsPrime(value)) {
                    MessageBox(hWnd, L"Is Prime", L"Prime test", MB_OK);
                }
                else {
                    MessageBox(hWnd, L"Is NOT Prime", L"Prime test", MB_OK);
                }
            }
            else if (ControlID == IDC_BTN_2) {
                LONG64 result = Factorial(value);
                sprintf(buff, "%ld", result);
                MessageBoxA(hWnd, (LPSTR)buff, "Factorial", MB_OK);
            }
            else if (ControlID == IDC_BTN_3) {
                if (IsPerfect(value)) {
                    MessageBox(hWnd, L"Is Perfect", L"Perfect test", MB_OK);
                }
                else {
                    MessageBox(hWnd, L"Is NOT Perfect", L"Perfect test", MB_OK);
                }
            }
        }
        break;
        case WM_DESTROY:
            PostQuitMessage(0);
            break;
        default:
            return DefWindowProc(hWnd, message, wParam, lParam);
            break;
    }
    return 0;
}