简单的算符优先分析法

#include<stdio.h>
#include<math.h>
#include<stack1.h>

char code[]="+-*/()#\0";
char grade[7][7]={">><<<>>",">><<<>>",">>>><>>",">>>><>>","<<<<<=E",">>>>E>>","<<<<<E="};
int code1(double a)
{
int i;
for(i=0;code[i];i++)
   {
    if((char)a==code[i])
      return i;
   }
return -1;

}
char grade1(stack *sp,double a)
{
return grade[code1(sp->buffer[sp->top])][code1(a)];
}

char buffer[50];
main()
{
int i,j=0,k=0,l,h=1;
char a[50];
double b[50];
double c[50];
double d[10];