Answer Posted / lalit

public int validateuser(string username, string passwd)
{
con.Close();
con.Open();
cmd = new SqlCommand("sp_VALIDATION",con);
rd = cmd.ExecuteReader();
bool b = rd.Read();
if (b == false)
{
if (FormsAuthentication .Authenticate
(username ,passwd ))

return 2; //For Administrator

else
return 0; //For Unauthorized
User

}
else

return 1; //For Normal User


}


***************************************************
protected void btnenter_Click(object sender, EventArgs e)
{
int tempvar= stdinfo.validateuser
(txtboxadminname.Text ,txtboxpassword.Text);

if (tempvar == 2)
Response.Redirect("Admin/AdminHomePage.aspx");

else
lblerrormsg.Text = ("You Are Not Authorized
Admin!");
lblerrormsg.Visible = true;
}

Can you explain polymorphism?

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#include #include #include #include void insert(struct btreenode **, int); void inorder(struct btreenode *); struct btreenode { struct btreenode *leftchild; struct btreenode *rightchild; int data; }; main() { struct btreenode *bt; bt=(struct btreenode *)NULL; int req,i=1,num; clrscr(); printf("Enter number of nodes"); scanf("%d",&req); while(i<=req) { printf("Enter element"); scanf("%d",&num); insert(&bt,num); i++; } inorder(bt); } void insert(struct btreenode **sr, int num) { if(*sr==NULL) { *sr=(struct btreenode *)malloc (sizeof(struct btreenode)); (*sr)->leftchild=(struct btreenode *)NULL; (*sr)->rightchild=(struct btreenode *)NULL; (*sr)->data=num; return; } else { if(num < (*sr)->data) insert(&(*sr)->leftchild,num); else insert(&(*sr)->rightchild,num); } return; } void inorder(struct btreenode *sr) { if(sr!=(struct btreenode *)NULL) { inorder(sr->leftchild); printf("\n %d",sr->data); inorder(sr->rightchild); } else return; } please Modify the given program and add two methods for post order and pre order traversals.

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write a code for this. serial_number contained in the header of the file will be read , if this serial number is less than a previous serial number within a successfully processed file, or is the same as another serial number within a successfully processed file, or if the field contains anything other than 7 digits, then the file must error with the reason ‘Invalid SERIAL_NUMBER’.

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