(In C language)






#include<stdio.h>
#include<conio.h>
main()
{
int n,s,h,m;
 clrscr();
printf("\t\t\t\tStop Watch\n\n\n\n\t\t\t\tTimer=>00:00:00 \n\n\n press 1: for start Timer\n2.Exit");
scanf("%d",&n);
switch(n)
{
case 1:
for(s=0,h=0,m=0;s<=59;s++)
if(s==59 && m<=59)
{
s=0;
m++;
}
else if (s==59 && m==60 )
{
m=0;
s=0;
h++;
}

else
{
  delay();
 clrscr();
printf("\n\n\n\n\n\n\n\n\n\t\t\t\tTimer=>%d:%d:%d\n\n\n\n",h,m,s);
}
break;
case 2:
exit();
default:
clrscr();
    printf("\n\n\n\n\n\t\t\t\tenterd wrong chooic");
    getche();
   }
  }