Age calculation program in C

[Paritosh Das]

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<dos.h>
void main()
{
	int gd=DETECT,gm,year,month,day,cy,cm,cd,i,j,maxx,maxy;
	int y,m,d;
	int midx, midy;
	int stangle = 0, endangle = 360;
	int xradius = 100, yradius = 50,xradius1 = 2, yradius1 = 2;
	int radius = 50;
	clrscr();
	initgraph(&gd,&gm,"d:\\tc\\bgi");
	maxx=getmaxx();
	maxy=getmaxy();
	for(i=0;i<10;i++)
	{
	setcolor(4);
		rectangle(i,i,maxx-i,maxy-i);
		rectangle(9,11+i,629,45-i);
	}
	for(i=0;i<315;i++)
	{
	delay(3);
	setcolor(2);
		rectangle(10+i,21,630-i,35);
		setcolor(i);
		outtextxy(280,24,"AGE CALCULATOR");
		setcolor(14);
		outtextxy(28,70,"*#### WELCOME ####*");
	}
	midx = getmaxx() / 2;
   midy = getmaxy() / 2;
   setcolor(getmaxcolor());

   /* draw ellipse */
   for(i=1;i<=100;i+=5)
   {
		delay(30);
		setcolor(2);
		ellipse(midx+i, midy+i, stangle, endangle,
		   xradius, yradius);
		setcolor(4);
		ellipse(midx-i, midy+i, stangle, endangle,
		   xradius, yradius);
		setcolor(6);
		ellipse(midx+i, midy-i, stangle, endangle,
		   xradius, yradius);
		setcolor(5);
		ellipse(midx-i, midy-i, stangle, endangle,
		   xradius, yradius);
   }


   for(i=5;i<=100;i+=3)
   {

		setcolor(15);
		circle(midx+i, midy-i, radius);
		setcolor(11);
		circle(midx+i, midy+i, radius);
		setcolor(3);
		circle(midx-i, midy-i, radius);
		setcolor(14);
		circle(midx-i, midy+i, radius);
		setcolor(12+i);
		//outtextxy(midx+200,midy,"PARITOSH");
		delay(20);
   }
   for(i=1;i<=100;i+=5)
   {
		delay(10);
		setcolor(15);
		ellipse(midx+i, midy, stangle, endangle,
		   xradius1+i, yradius1+i);
		setcolor(11);
		ellipse(midx, midy+i, stangle, endangle,
		   xradius1+i, yradius1+i);
		setcolor(3);
		ellipse(midx, midy-i, stangle, endangle,
		   xradius1+i, yradius1+i);
		setcolor(14);
		ellipse(midx-i, midy, stangle, endangle,
		   xradius1+i, yradius1+i);
		   //outtextxy(midx-20,midy,"WELCOME");
   }
   setcolor(14);
		   outtextxy(350,440,"* PRESS ANY KEY TO CONTINUE....");

	getch();
	closegraph();
	//gotoxy(300,200);
	//for(i=0;i<300;i++);
	//printf("%c",l);
 ll:	printf("\t\t\t\t\t :DATE  FORMAT:\n");
	printf("\t\t\t\t\tYYYY MM DD\n");

	printf("\n* ENTER THE CURRENT DATE:\t\t");
	scanf("%d%d%d",&cy,&cm,&cd);
	printf("\n* ENTER YOUR DATE OF BIRTH:\t\t");
	scanf("%d%d%d",&year,&month,&day);
	if(cm<=12 && month<=12 && cd<=31 && day<=31)
	{
		if(cd>=day)
			d=cd-day;
		else
		{
			d=(cd+30)-day;
			month=month+1;
		}
		if(cm>=month)
			m=cm-month;
		else
		{
			m=(cm+12)-month;
			year=year+1;
		}
		if(cy>=year)
			y=cy-year;
		else
		{
		mm:	printf("\nYOU HAVEN'T INPUT ACCURATELY !....\n");
			printf("PLEASE, INPUT AGAIN....\n\n");
			goto ll;
		}
		printf("\n* YOUR AGE ON THE CURRENT DATE:\t\t%d   %d  %d",y,m,d);
		printf("\n\n\n\n\n\n* PRESS ANY KEY TO EXIT....");
	}
	else
		goto mm;
	getch();
}

[alexchen]

First your code is not formatted. Explain yourself. How does it failed?

[Trentacle]

#include<conio.h>
#include<graphics.h>
#include<dos.h>
void main()

I'm assuming those three headers provide all the undeclared identifiers in your code. Care to share with us where they come from?

main() returns int.

[jonsca]

Care to share with us where they come from?

They are Turbo C headers (and/or non-standard ones). It was considered a nice compiler back in 1992.