How can we check if a file Exists or not using Win32 program?

Use GetFileAttributes to check that the file system object exists and that it is not a directory.

BOOL FileExists(LPCTSTR szPath){  DWORD dwAttrib = GetFileAttributes(szPath);  return (dwAttrib != INVALID_FILE_ATTRIBUTES &&          !(dwAttrib & FILE_ATTRIBUTE_DIRECTORY));}

Copied from How do you check if a directory exists on Windows in C?

You can make use of the function GetFileAttributes. It returns 0xFFFFFFFF if the file does not exist.

You can call FindFirstFile.

Here is a sample I just knocked up:

#include <windows.h>#include <tchar.h>#include <stdio.h>int fileExists(TCHAR * file){   WIN32_FIND_DATA FindFileData;   HANDLE handle = FindFirstFile(file, &FindFileData) ;   int found = handle != INVALID_HANDLE_VALUE;   if(found)    {       //FindClose(&handle); this will crash       FindClose(handle);   }   return found;}void _tmain(int argc, TCHAR *argv[]){   if( argc != 2 )   {      _tprintf(TEXT("Usage: %s [target_file]\n"), argv[0]);      return;   }   _tprintf (TEXT("Looking for file is %s\n"), argv[1]);   if (fileExists(argv[1]))    {      _tprintf (TEXT("File %s exists\n"), argv[1]);   }    else    {      _tprintf (TEXT("File %s doesn't exist\n"), argv[1]);   }}