#include<conio.h>
#include<stdio.h>
#include<string.h>
static int i=0;
struct web
{
char name[30],pass[30];
}w[99];
int n;
void login(void);
void reg(void);
int main()
{
printf("\n\n\n\n\n\t\t\t\tWELCOME TO MY WEBSITE");
printf("\n\t\t\t\t=====================");
printf("\n\n\n\n\t\t\tPress Enter to proceed...!!");
if(getch()==13)
  //clrscr();
XY:
printf("\n\n\n\t\t\t1. LOGIN\t\t2. REGISTER");
printf("\n\n\n\t\t\t\tENTER YOUR CHOICE: ");
scanf("%d",&n);
switch(n)
  {
    case 1: //clrscr();
        login();
        break;
    case 2: //clrscr();
        reg();
        break;
    default: printf("\n\n\t\t\t\tNO MATCH FOUND");
        printf("\n\n\t\t\tPress Enter to re-Enter the choice");
        if(getch()==13)
        //clrscr();
        goto XY;
  }
  return 0;
}
void reg()
  {
    FILE *fp;
    char c,checker[30]; int z=0;
    fp=fopen("Web_reg.txt","ab+");
    printf("\n\n\t\t\t\tWELCOME TO REGISTER ZONE");
    printf("\n\t\t\t\t^^^^^^^^^^^^^^^^^^^^^^^^");
    for(i=0;i<100;i++)
    {
      printf("\n\n\t\t\t\t  ENTER USERNAME: ");
      scanf("%s",checker);
        while(!feof(fp))
        {
          fread(&w[i],sizeof(w[i]),1,fp);
          if(strcmp(checker,w[i].name)==0)
            {
            printf("\n\n\t\t\tUSERNAME ALREDY EXISTS");
            //clrscr();
            reg();
            }
          else
          {
            strcpy(w[i].name,checker);
            break;
          }
        }
      printf("\n\n\t\t\t\t  DESIRED PASSWORD: ");
      while((c=getch())!=13)
        {
          w[i].pass[z++]=c;
          printf("%c",'*');
        }
      fwrite(&w[i],sizeof(w[i]),1,fp);
      fclose(fp);
      printf("\n\n\tPress enter if you agree with Username and Password");
      if((c=getch())==13)
        {
        //clrscr();
        printf("\n\n\t\tYou are successfully registered");
        printf("\n\n\t\tTry login your account??\n\n\t\t  ");
        printf("> PRESS 1 FOR YES\n\n\t\t  > PRESS 2 FOR NO\n\n\t\t\t\t");
        scanf("%d",&n);
        switch(n)
          {
              case 1: //clrscr();
                    login();
                    break;
              case 2: //clrscr();
                    printf("\n\n\n\t\t\t\t\tTHANK YOU FOR REGISTERING");
                    break;
          }
        }
        break;
      }
    getch();
  }
  void login()
    {
      FILE *fp;
      char c,name[30],pass[30]; int z=0;
      int checku,checkp;
      fp=fopen("Web_reg.txt","rb");
      printf("\n\n\t\t\t\tWELCOME TO LOG IN ZONE");
      printf("\n\t\t\t\t^^^^^^^^^^^^^^^^^^^^^^");
      for(i=0;i<1000;i++)
      {
        printf("\n\n\t\t\t\t  ENTER USERNAME: ");
        scanf("%s",name);
        printf("\n\n\t\t\t\t  ENTER PASSWORD: ");
        while((c=getch())!=13)
        {
          pass[z++]=c;
          printf("%c",'*');
        }
        pass[z]='\0';
      while(!feof(fp))
        {
        fread(&w[i],sizeof(w[i]),1,fp);
          checku=strcmp(name,w[i].name);
          checkp=strcmp(pass,w[i].pass);
          if(checku==0&&checkp==0)
          {
            printf("\n\n\n\t\t\tYOU HAVE LOGGED IN SUCCESSFULLY!!");
            printf("\n\n\n\t\t\t\tWELCOME, HAVE A NICE DAY");
            break;
          }
        else if(checku==0&&checkp!=0)
          {
            printf("\n\n\n\t\t\tWRONG PASSWORD!! Not %s??",name);
            printf("\n\n\t\t\t\t  (Press 'Y' to re-login)");
            if(getch()=='y'||getch()=='Y')
              login();
          }
        else if(checku!=0)
          {
            printf("\n\n\n\t\t\tYou are not a Registered User\n \t\t\tPress enter to register yourself");
            if(getch()==13)
            //clrscr();
            reg();
          }
        }
        break;
      }
      getch();
    }