msdn上的代码也有错吗?不可能!各位大虾帮我看看为什么会出错!是不是哪个头文件没include?

关于文件写入打开问题我Copy的msdn上的代码为什么编译不了?
#include <stdio.h>
void main( void )
{
FILE *stream;
char list[30];
int i, numread, numwritten;

/* Open file in text mode: */
if( (stream = fopen( "fread.out", "w+t" )) != NULL )
{
for ( i = 0; i < 25; i++ )
list[i] = (char)('z' - i);
/* Write 25 characters to stream */
numwritten = fwrite( list, sizeof( char ), 25, stream );
printf( "Wrote %d items\n", numwritten );
fclose( stream );

}
else
printf( "Problem opening the file\n" );
if( (stream = fopen( "fread.out", "r+t" )) != NULL )
{
/* Attempt to read in 25 characters */
numread = fread( list, sizeof( char ), 25, stream );
printf( "Number of items read = %d\n", numread );
printf( "Contents of buffer = %.25s\n", list );
fclose( stream );
}
else
printf( "File could not be opened\n" );
}
下面是出现的错误!
LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
Debug/testopenfile.exe : fatal error LNK1120: 1 unresolved externals