python怎么开始写代码

vc怎么开始写代码

1.编程 c 怎么写出一个v型代码

既然是简单计算器，只需要实现加减乘除，同时每次支持两个操作数和一个操作符。

同时约定，操作数为整型，对于加减乘输出为整型，除法输入为浮点型即可。对于输入输出和计算，提供如下代码：#include int main(){ int a,b,r; float r_div; char op; scanf("%d",&a)；//读入操作数a op = getchar（)；//读入运算符号 scanf("%d",&b)；//读入操作数b switch(op)//根据运算符号，进行对应的加减乘除运算。

{ case '+': r = a+b；//加法 break; case '-': r = a-b；//减法 break; case '*': r = a*b；//乘法 break; case '/': r_div = a/(float)b；//除法 break; default: printf("unknow operator\n")；//未知操作符，属于输入错误。退出程序。

return -1； } //根据操作符号，输入对应的运行结果。 if(op == '/')printf("%d%c%d=%f\n", a,op,b,r_div); else printf("%d%c%d=%d\n", a,op,b,r); return 0；}以上代码就实现了最简单的计算器，可以根据需要，在其上增加其它功能，比如连续计算，或者括号支持等。

2.在VC++中怎么编写C程序

估计你用的是VC++6.0基于控制台的编程吧？

VC++6.0基于控制台的编程标准步骤是：先建立一个工程（又叫工作区间，英文名workspace），然后在这个工程里添加头文件（.h文件）源程序文件（.cpp）文件等等.

我把常用的步骤叙述一下：

1.打开VC++

2.建立工程：点File->New，选Project标签，在列表中选Win32 Console Application，再在右边的框里为工程起好名字，选好路径，点OK->finish.至此工程建立完毕.

3.创建源文件或头文件：点File->New，选File标签，在列表里选C/C++ Header File或者C++ Source File或者别的.给文件起好名字，选好路径，点OK.至此一个源文件就被添加到了你刚创建的工程之中.

4.写好代码

5.编译->链接->调试

此外，C语言的代码可以直接复制到VC++中使用，但最好别用C中那个清屏的函数，在VC++中这个函数被包含在了另外的头文件中

3.这个简单的VC++代码该怎么写

#include "stdafx.h"#include "resource.h"#define MAX_LOADSTRING 100// Global Variables:HINSTANCE hInst; // current instanceTCHAR szTitle[MAX_LOADSTRING]; // The title bar textTCHAR szWindowClass[MAX_LOADSTRING]; // The title bar text// Foward declarations of functions included in this code module:ATOM MyRegisterClass(HINSTANCE hInstance);BOOL InitInstance(HINSTANCE, int);LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);LRESULT CALLBACK About(HWND, UINT, WPARAM, LPARAM);int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){ // TODO: Place code here. MSG msg; HACCEL hAccelTable; // Initialize global strings LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); LoadString(hInstance, IDC_SF, szWindowClass, MAX_LOADSTRING); MyRegisterClass(hInstance); // Perform application initialization: if (!InitInstance (hInstance, nCmdShow)) { return FALSE; } hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_SF); // Main message loop: while (GetMessage(&msg, NULL, 0, 0)) { if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) { TranslateMessage(&msg); DispatchMessage(&msg); } } return msg.wParam;}//// FUNCTION: MyRegisterClass()//// PURPOSE: Registers the window class.//// COMMENTS://// This function and its usage is only necessary if you want this code// to be compatible with Win32 systems prior to the 'RegisterClassEx'// function that was added to Windows 95. It is important to call this function// so that the application will get 'well formed' small icons associated// with it.//ATOM MyRegisterClass(HINSTANCE hInstance){ WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = (WNDPROC)WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = hInstance; wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_SF); wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = (LPCSTR)IDC_SF; wcex.lpszClassName = szWindowClass; wcex.hIconSm = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL); return RegisterClassEx(&wcex);}//// FUNCTION: InitInstance(HANDLE, int)//// PURPOSE: Saves instance handle and creates main window//// COMMENTS://// In this function, we save the instance handle in a global variable and// create and display the main program window.//BOOL InitInstance(HINSTANCE hInstance, int nCmdShow){ HWND hWnd; hInst = hInstance; // Store instance handle in our global variable hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); if (!hWnd) { return FALSE; } ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); return TRUE;}//// FUNCTION: WndProc(HWND, unsigned, WORD, LONG)//// PURPOSE: Processes messages for the main window.//// WM_COMMAND - process the application menu// WM_PAINT - Paint the main window// WM_DESTROY - post a quit message and return////LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){ int wmId, wmEvent; PAINTSTRUCT ps; HDC hdc; TCHAR szHello[MAX_LOADSTRING]; LoadString(hInst, IDS_HELLO, szHello, MAX_LOADSTRING); switch (message) { case WM_COMMAND: wmId = LOWORD(wParam); wmEvent = HIWORD(wParam); // Parse the menu selections: switch (wmId) { case IDM_ABOUT: DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About); break; case IDM_EXIT: DestroyWindow(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } break; case WM_PAINT: hdc = BeginPaint(hWnd, &ps); // TODO: Add any drawing code here。

RECT rt; GetClientRect(hWnd, &rt); DrawText(hdc, szHello, strlen(szHello), &rt, DT_CENTER); EndPaint(hWnd, &ps); break; case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } return 0;}// Mesage handler for about box.LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam){ switch (message) { case WM_INITDIALOG: return TRUE; case WM_COMMAND: if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) { EndDialog(hDlg, LOWORD(wParam)); return TRUE; } break; } return FALSE;}。

vc怎么开始写代码