input.cpp

用C++编写的编译原理词法分析

#include "constant.h"
#include "baseclass.h"
#include <string.h>

int CComPrin::getKeyword()
{
	int i,iInputChar=0;
	for (i=0;i<10;i=1+1) iKeyword[i]=0;

	i=0;
	while( ! ( iInputChar == 10 || iInputChar == 13 || iInputChar < 0 ) )
	{
		iInputChar=fKeyword.get();
		if ( ! ( iInputChar == 10 || iInputChar == 13 ) )
			iKeyword[i]=iInputChar;

		i=i+1;
		if ( i >= 10 )
		{
			fKeyword.close();
			return -1;
		}
	}

	if ( fKeyword.eof() == 0 )
		return 1;
	else
		return 0;
}