ll_1.c

在纯DOS下运行的TurboC3_ucos2_ucgui bug改进版本

#include "stdio.h"
#include "string.h"
#include "stdlib.h"
struct xxx	//矩阵的坐标
{char ch;
int biaohao;};
struct xxx xx[7]={{'E',0},{'F',1},{'T',2},{'U',3},{'P',4},{')',5},{'#',6}};
struct xxx yy[6]={{'i',0},{'(',1},{'+',2},{')',3},{'*',4},{'#',5}};

struct str  //产生式和矩阵
{int num;   //产生式标号
char AA;    //左端
char BB[3]; //右端
};

struct str css[8]={{1,'E',"TF"},
		   {2,'F',"+TF"},
		   {3,'F',"^"},
		   {4,'T',"PU"},
		   {5,'U',"*PU"},
		   {6,'U',"^"},
		   {7,'P',"(E)"},
		   {8,'P',"i"}};
struct str jz[7][6]={ {{1,'P',"FT"},{1,'P',"FT"}},
		      {{-2,' '," "},{-2,' '," "},{2,'N',"FT"},{3,'P',"^"},{-2,' '," "},{3,'P',"^"}},
		      {{4,'P',"UP"},{4,'P',"UP"}},
		      {{-2,' '," "},{-2,' '," "},{6,'P',"^"},{6,'P',"^"},{5,'N',"UP"},{6,'P',"^"}},
		      {{8,'N',"^"},{7,'N',")E"}},
		      {{-2,' '," "},{-2,' '," "},{-2,' '," "},{-1,'N',"^"}},
		      {{-2,' '," "},{-2,' '," "},{-2,' '," "},{-2,' '," "},{-2,' '," "},{0,' ',"OK!"}} };
char s[10]={"#E"}; //s栈 初始值是#E
char in[10];       //输入流
int x=0,y=0;       //坐标
int inport;	//输入流指针
int sport=1;	//s栈指针

void position()	   //当前坐标赋给x,y
{
int i;
for(i=0;i<7;i++)
	{if s[sport]==xx[i].ch
		break;}
x=i;
i=0;
while in[inport]!=yy[i].ch
	i++;
y=i;
}


void print()      //显示函数
{
int i;
i=0;
putch('\n');
puts(s);          //显示s栈
printf('\t');

puts(in);         //显示输入流
putch('\t');

if jz[x][y].num>0	     //显示表达式
	{putch(css[jz[x][y].num-1].aa);
	 puts(css[jz[x][y].num-1].bb);
	 }

printf('\t');
}

void move()      //改变函数
{
position;
if jz[x][y].num==-2
	{puts("表达式错误!!");
	abort();
	}
else if jz[x][y].num==-1

}

void main()
{
printf("请输入一个表达式:(****#)\n     ");
gets(in);         //输入流
inport=strlen(in);//输入流指针初始化
printf("s栈\t输入流\t产生式");
while ((x=6)&&(y=5))
	{print;
	move;};
}