Create and write inside a file using the Win32api in C.

win32api-create-and-write.c

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

int main(int argc, CHAR *argv[])
{
		HANDLE hFile;
		char DataBuffer[] = "This ia s test string to be written.";
		DWORD dwBytesToWrite = (DWORD) strlen(DataBuffer);
		DWORD dwBytesWritten = 0;

		printf("\n");
		if(argc != 2)
		{
			puts("Errro");
			return 1;
		}
		hFile = CreateFile(argv[1],
					GENERIC_WRITE,
					0,
					NULL,
					CREATE_ALWAYS,
					FILE_ATTRIBUTE_NORMAL,
					NULL);
		if(hFile == INVALID_HANDLE_VALUE)
		{
			printf("error: %d", GetLastError());
			return 2;
		}
		printf("Writing %d bytes to %s. \n", dwBytesToWrite, argv[1]);

		while( dwBytesWritten < dwBytesToWrite)
		{
			if (FALSE == WriteFile(hFile,
					DataBuffer + dwBytesWritten,
					dwBytesToWrite- dwBytesWritten,
					&dwBytesWritten,
					NULL))
					{
						printf("could not write, error: %x", GetLastError());
						CloseHandle(hFile);

					}

		}

		printf("Wrote %d bytes to %s successfully. \n", dwBytesWritten, argv[1]);
		CloseHandle(hFile);
		return 0;

}