C语言初学者，关于表达式求值，求解答

void transform(char suffix[], char exp[])
{
OPTR s;
char *p;
char ch='\0',c='\0';
int k = 0,e='\0';
p = exp;
ch = *p;
InitStack(s);
Push(s, '#');
while (Gettop(s, e) != '#')
{
if (ch >= '0' && ch <= '9')
suffix[k++] = ch;
else
{
switch (ch)
{
case'(':Push(s, ch); break;
case')':
{
Pop(s, c);
while (c != '(')
{
suffix[k++] = c; Pop(s, c);
}
break;
}
default:
{
while (Gettop(s, c) && (precede(c, ch)))
{
suffix[k++] = c; Pop(s, c);
}
if (ch != '#')Push(s, ch);
break;
}
}
}
if (ch != '#')ch = *++p;
}
suffix[k++] = '\0';
}请问这段将算术表达式转变为后缀表达式的代码有问题吗

有没有问题运行一下不就知道了吗