C语言 用鼠标操作 计算器

#define maxsize 20
#define pai 3.1415926536
#define child1 if(a[i-1]=='='){gotoxy(19,7);printf(" 0                                  ");t=20;i=0;mark=0;gotoxy(19,6);printf(" 0                               ");}
#define child2 if(!(a[i-1]>='0'&&a[i-1]<='9'||a[i-1]=='.')||i==0)mark=0;if(t<=54&&mark<17){mark++;gotoxy(t++,7);
#include <stdio.h>
#include <graphics.h>
#include <stdlib.h>
#include <dos.h>
#include <math.h>
union REGS regs;
int X__max,Y__max,x_max,y_max;
typedef char  datatype;
typedef double  datatype2;
typedef struct {
  datatype stack[maxsize];
  int top;
}SeqStack;
typedef struct {
  datatype2 stack[maxsize];
  int top;
}SeqStack2;
void  StackInitiate1(SeqStack *s)
{s->stack[0]='=';
  s->top=1;
}
void  StackInitiate2(SeqStack2 *s)
{  s->top=0;
}
int StackPush(SeqStack *s,datatype x)
{ if (s->top>=maxsize) return 0;

  else {  s->stack[s->top]=x;s->top++; }
  return 1;
}
int StackPop(SeqStack *s,datatype *x)
{s->top-- ;
 *x=s->stack[s->top] ; return 1;
}
int GetTop(SeqStack *s,datatype *x)
{*x=s->stack[s->top-1];
 return 1;
}
int StackPush2(SeqStack2 *s,datatype2 x)
{ if (s->top>=maxsize) return 0;
  else  {  s->stack[s->top]=x;
        s->top++; }
  return 1;
}
int StackPop2(SeqStack2 *s,datatype2 *x)
{ s->top-- ;
  *x=s->stack[s->top] ; return 1;
 }
int Msinit(int Xlo,int Xhi,int Ylo,int Yhi)
{int retcode;
 regs.x.ax=0;
 int86(0x33,&regs,&regs);
 retcode=regs.x.ax;
 if(retcode==0) return 0;
 regs.x.ax=7; regs.x.cx=Xlo;
 regs.x.dx=Xhi;
 int86(0x33,&regs,&regs);