main.c.bak

C语言表达式语法分析器

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include "head.h"
#include "yacc.tab.h"
#include "func.h"

extern 	symrec *putsym(char const *,int,double);         
extern 	symrec *getsym(char const *);               
extern 	symrec *updatesym(char const *,int,double);
FILE * fout;
FILE * post_out;
symrec 	* sym_table;
void init_table();

int main()
{
	init_table();
	fout=fopen("out","a+");
	return (yyparse());
}

void init_table(void)
{
	int i;
	symrec *ptr;
	for(i=0;arith_fncts[i].fname!=0;i++)
	{	
	ptr=putsym(arith_fncts[i].fname,FUNCTION,0);
	ptr->val.fnctptr=arith_fncts[i].fnct;
	}
	for(i=0;arith0_fncts[i].fname!=0;i++)
	{	
	ptr=putsym(arith0_fncts[i].fname,FUNCTION,0);
	ptr->val.fnctptr0=arith0_fncts[i].fnct;
	ptr->diff=FUNCTION_OTHER;
	}
	for(i=0;arith2_fncts[i].fname!=0;i++)
	{	
	ptr=putsym(arith2_fncts[i].fname,FUNCTION,0);
	ptr->val.fnctptr2=arith2_fncts[i].fnct;
	}
	for(i=0;arith_time_fncts[i].fname!=0;i++)
	{	
	ptr=putsym(arith_time_fncts[i].fname,FUNCTION,0);
	ptr->val.fnctptr_time=arith_time_fncts[i].fnct;
	ptr->diff=FUNCTION_TIME;
	}		
}