Calculator c projects

[aruljothi]

#include"graphics.h"
#include"dos.h"
#include"stdio.h"
#include"math.h"
union REGS i,o;
char text[35][25]={
"7","8","9","*","4","5","6","/","1","2","3","+","0","00",".","-","M","M+",
"M-","+/-","MR","MC","x^2","sr","OFF","AC","CE","="};

int s=0,k=0,pass,op,prop,newnum=1,bt,memo=1,d=0,sq;
long double num=0,accum,m;
void normalbutton(int,int,int,int,char *);
void main()
{
int gd=DETECT,gm,x1,x2,y1,y2,i,j,maxx,maxy,x,y,button;
initgraph(&gd,&gm,"");
if(initmouse()==0)
{
  closegraph();
  restorecrtmode();
  printf(" Mouse driver not loded");
  exit(1);
}
setcolor(2);
gotoxy(20,10);
printf("WELCOME TO ISTE
");
gotoxy(20,14);
printf("press any key to continue.......
");
getch();
cleardevice();
showmouseptr();
movemouseptr(&x,&y);
setcolor(15);
rectangle(198,140,417,163);
rectangle(199,141,418,164);
rectangle(197,139,416,162);
rectangle(185,130,430,450);
rectangle(184,129,431,451);
rectangle(182,127,433,454);
rectangle(181,126,434,453);
setfillstyle(SOLID_FILL,3);
//bar(200,142,415,161);
outtextxy(50,25,"A Calculator project in C presented by B.NARAYANA
MOORTHY
AND  R.KARTHIK KEYAN");
outtextxy(200,100,"Press OFF button to exit....");
y1=140;
y2=160;
for(j=0;j<7;j++)
{
  x1=200;
  x2=235;
  y1+=40;
  y2+=40;
for(i=0;i<4;i++)
{
   normalbutton(x1,x2,y1,y2,text);
   s++;
   x1+=60;
   x2+=60;
   }
}
while(1)
{
getmousepos(&button,&x,&y);
y1=140;
y2=160;
for(j=0;j<7;j++)
{
  x1=200;
  x2=235;
  y1+=40;
  y2+=40;
  for(i=0;i<4;i++)
  {
   if((x<x2&&x>x1)&&(y<y2&&y>y1))
   {
   if((button&1)==1)
    {
    gotoxy(28,10);
   bt=j*4+i;
   setcolor(11);
   outtextxy(x1+12,y1+7,text[j*4+i]);
   if(num>pow(10.0,18))
   exit();
   delay(10);
   delay(250);
   delay(10);
   switch (bt)
   {
   case  8 :
      addnum(1);
      break;
   case  9 :
      addnum(2);
      break;
   case  10 :
      addnum(3);
      break;
   case  4 :
      addnum(4);
      break;
   case  5 :
      addnum(5);
      break;
   case  6 :
      addnum(6);
      break;
   case  0 :
      addnum(7);
      break;
   case  1 :
      addnum(;
      break;
   case  2 :
      addnum(9);
      break;
   case  12 :
      addnum(0);
      break;
   case  11 :
      operation(1);   // plus
      break;
   case  15 :
      operation(2);    // minus
      break;
   case  3 :
      operation(3);    // multiplication
      break;
   case  7 :
      operation(4);     // division
      break;
   case 13:
      doublezero();
      break;
   case  14 :
      decimal();
      break;
   case 16:
      m=m;
      printf("%25.5Lf",m); //memory call
      break;
   case 20:
      printf("%25.5Lf",m);
      break;
   case 19:
      plusminus();
      break;
   case 17:
      m=m+num;       //memory plus
      break;
   case 18:
      m=m-num;       //memory minus
      break;
   case 21:
      clearm();
      break;
   case 22 :
      square();
      break;
   case 23:
      sqroot();
      break;
   case 24:
      hidemouseptr();
      setcolor(1);
      cleardevice();
      setcolor(14);
      outtextxy(225,200,"THANK YOU");
      delay(2000);
      exit();
      break;
   case 25:
      allclear();
      break;
   case 26:
      clear();
      break;
   case 27:
      num=operation(5);          //  equalto
      break;
    }
    setcolor(1);
   outtextxy(x1+12,y1+7,text[j*4+i]);
    }
   }
x1+=60;

   x2+=60;
}
}
}
}
void normalbutton(int x1,int x2,int y1,int y2,char *text)
{
setcolor(15);
rectangle(x1-2,y1-2,x2+1,y2+1);
rectangle(x1-1,y1-1,x2+2,y2+2);
setcolor(5);
rectangle(x1,y1,x2+2,y2+2);
rectangle(x1,y1,x2+1,y2+1);
setfillstyle(SOLID_FILL,14);
bar(x1,y1,x2,y2);
setcolor(1);
outtextxy(x1+12,y1+7,text);
k++;
}

initmouse()
{
i.x.ax=0;
int86 (0x33,&i,&o);
return(o.x.ax);
}
hidemouseptr()
{
    i.x.ax=2;
    int86(0x33,&i,&o);
    return 0;
}

showmouseptr()
{
i.x.ax=1;
int86(0x33,&i,&o);
return 0;
}
getmousepos(int *button,int *x,int *y)
{
i.x.ax=3;
int86(0x33,&i,&o);
*button=o.x.bx;
*x=o.x.cx;
*y=o.x.dx;
return 0;
}
/* Move mouse ptr to x,y */
movemouseptr(int *x,int *y)
{
i.x.ax=4;
int86(0x33,&i,&o);
o.x.cx=*x;
o.x.dx=*y;
return 0;
}
addnum(int pass)
{   if(sq)
   newnum=1;

   if(newnum)
     {      if(d)
   {
     num=pass/(pow(10.0,d));
     d++;
     newnum=0;
   }
    else
   {  num=pass;
      newnum=0;
   }
     }
   else
   {
   if(d)
   {
      if(num<0)
      num=num-pass/(pow(10.0,d));
      else
      num=num+pass/(pow(10.0,d));
     d++;
   }
   else
   {
   num=num*10+pass;
   }
   }
printf("%25.5Lf",num);
return ;
}
operation(int opr)
{  long double pnum;
   pnum=num;

   if(newnum && (prop != 5) && memo)
   {
   }
   else
  {  newnum=1;
    d=0;
    sq=0;
    switch(prop)
   {
    case 1:
      accum=accum+pnum;
      break;
    case 2:
      accum=accum-pnum;
      break;
    case 3:
      accum=accum*pnum;
      break;
    case 4:
      accum=accum/pnum;
      break;
    default:
      accum=pnum;
    }
  }
   prop=opr;
   num=accum;
printf("%25.5Lf",num);
return num;
}
allclear()
{
sq=0;
accum=0;
num=0;
d=0;
newnum=1;
printf("%25.5Lf",num);
return;
}
plusminus()
{ if(num!=0)
  {   num*=-1;
   printf("%25.5Lf",num);
  }
  return;
}
clearm()
{
m=0;
//printf("%25.5Lf",m);
return;
}
decimal()
{
if(!d)
{
d=1;
   if(newnum==1)
   {
    num=0;
   }
  printf("%25.5Lf",num);
  }
  return;
}
square()
{
sq=1;
num*=num;
printf("%25.5Lf",num);
return;
}
sqroot()
{ sq=1;
num=pow(num,0.5);
printf("%25.5Lf",num);
return;
}
doublezero()
{
if(d)
   {
    d++;
    d++;
   }
else
  num*=100;
printf("%25.5Lf",num);
return;
}
clear()
{
num=0;
printf("%25.5Lf",num);
return;
}