//dia.h
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<graphics.h>
#include<conio.h>
#include<dos.h>

typedef struct file
{
  char name[10];
} file;

void *screen_ptr;
file getfile();
int getInt();

void getScreen(int x,int y,int w,int h)
{
   int size = imagesize(x,y,x+w,y+h);
   screen_ptr = malloc(size);
   getimage(x,y,x+w,y+h,screen_ptr);
}

void restoreScreen(int x,int y)
{
   putimage(x,y,screen_ptr,0);
   free(screen_ptr);
}

file getfile()
{
  char array[10];
  int count=0;
  int h=30,w=225;
  int x=(getmaxx()-w)/2;
  int y=(getmaxy()-h)/2;
  file f;
  getScreen(x,y,w,h);
  setcolor(BLUE);
  rectangle(x,y,x+w,y+h);
  setfillstyle(1,0);
  bar(x+1,y+1,x+w-1,y+h-1);
  setcolor(RED);
  outtextxy(x+10,y+10,"Enter File Name:-");
  setcolor(BROWN);
  int curx=x+15+textwidth("Enter File Name:-");
  int cury=y+10;
  char cstr[2];
  cstr[1]='\0';
  line(curx+1,cury-1,curx+1,cury+7);
  while(1)
  {  char c=getch();
     if (c==13) break;
     if (c==27) { array[0]='\0';break;}
     if (c==32) continue;
     if (c==8)
     { if (count>0)
       {
	 setcolor(0);
	 line(curx+1,cury-1,curx+1,cury+7);
	 cstr[0]=array[count-1];
	 curx-=textwidth(cstr);
	 outtextxy(curx,cury,cstr);
	 count--;
	 setcolor(BROWN);
	 line(curx+1,cury-1,curx+1,cury+7);
       }
     }
     else if (count<8)
     {
       setcolor(0);
       line(curx+1,cury-1,curx+1,cury+7);
       setcolor(BROWN);
       cstr[0]=c;
       outtextxy(curx,cury,cstr);
       curx+=textwidth(cstr);
       line(curx+1,cury-1,curx+1,cury+7);
       array[count]=c;
       count++;
     }
  }
  array[count]='\0';
  restoreScreen(x,y);
  strcpy(f.name,array);
  return(f);
}


int getInt()
{
  char array[10];
  int count=0;
  int h=30,w=250;
  int x=(getmaxx()-w)/2;
  int y=(getmaxy()-h)/2;
  getScreen(x,y,w,h);
  setcolor(BLUE);
  rectangle(x,y,x+w,y+h);
  setfillstyle(1,0);
  bar(x+1,y+1,x+w-1,y+h-1);
  setcolor(RED);
  outtextxy(x+10,y+10,"Enter Number of Inputs:-");
  setcolor(BROWN);
  int curx=x+15+textwidth("Enter Number of Inputs:-");
  int cury=y+10;
  char cstr[2];
  cstr[1]='\0';
  line(curx+1,cury-1,curx+1,cury+7);
  while(1)
  {  char c=getch();
     if (c==13) break;
     if (c==27) { array[0]='\0';break;}
     if (c==32) continue;
     if ((c<'0')||(c>'9')) continue;
     if (c==8)
     { if (count>0)
       {
	 setcolor(0);
	 line(curx+1,cury-1,curx+1,cury+7);
	 cstr[0]=array[count-1];
	 curx-=textwidth(cstr);
	 outtextxy(curx,cury,cstr);
	 count--;
	 setcolor(BROWN);
	 line(curx+1,cury-1,curx+1,cury+7);
       }
     }
     else if (count<4)
     {
       setcolor(0);
       line(curx+1,cury-1,curx+1,cury+7);
       setcolor(BROWN);
       cstr[0]=c;
       outtextxy(curx,cury,cstr);
       curx+=textwidth(cstr);
       line(curx+1,cury-1,curx+1,cury+7);
       array[count]=c;
       count++;
     }
  }
  array[count]='\0';
  restoreScreen(x,y);
  return(atoi(array));
}

void dia(char str[])
{
  int h=textheight(str)+20;
  int w=textwidth(str)+20;
  int x=(getmaxx()-w)/2;
  int y=(getmaxy()-h)/2;
  getScreen(x,y,w,h);
  setcolor(BLUE);
  rectangle(x,y,x+w,y+h);
  setfillstyle(1,0);
  bar(x+1,y+1,x+w-1,y+h-1);
  setcolor(RED);
  outtextxy(x+10,y+10,str);
  getch();
  restoreScreen(x,y);
}