#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
void main()
{
int i=0,key=0,trys=1;
char temp,a[7],b[7]={'1','2','3','4','5','6','7'};
again:
if(trys<=3)
{
printf("\nwelcome to 'c' language \nby 'www.computersciencearticle.in'");
printf("\n\nEnter the  password=");
while(i<20)
{
  temp=getch();
  if (temp==13)
   break;
  a[i]=temp;
  i++;
  printf("*");

}

for(i=0;i<7;i++)
{
 if(a[i]!=b[i] || a[i]==NULL)
   key=1;
}
}
else
{
printf("You tries maximum times");
exit(0);
}

if(key==0)
printf("\n\n\n\t\t\t\tYou Entered correct password");
else
{
printf("\n\n\n\tYou have entered a wrong password. \nYou have tried %d out of 3 ",trys);
trys++;
goto again;
}
getch();
}