Showing posts with label i. Show all posts
Showing posts with label i. Show all posts
Sunday, March 12, 2017
Blocking Unblocking a Website or I P Address in Windows Environment
Blocking Unblocking a Website or I P Address in Windows Environment
How to Block or Unblock a Website or IP Address within your Computer
Follow the Procedure as under :
- Open the Hosts File, Go to Run Command (Win Key + R) and type in "C:WindowsSystem32driversetchosts" or alternatively go to My Computer->Windows Installation Directory (Usually Drive C: ) -> Windows -> System32 -> drivers -> etc -> hosts file
- Open the file with notepad.. (If you are using windows Vista/7 or 8, Right Click the hosts file and select properties --> under the Security Tab, Select all options under your Username and/or Administrator such as Write,Read,Read & Execute, Special Permissions --> Click Apply and then open that file with notepad - otherwise you wont be able to save changes to your hosts file)
- Find labels such as 127.0.0.1 localhost and move to the last line and enter the IP address of the Website you want to block along with its name.
- It should look like this --> 74.125.236.148 www.google.com ( IP Address SiteName)
- Save the changes made by pressing CTRL+S..
- You have successfully blocked www.google.com from being accessed within your computer
To Know the IP Address of a Website open command prompt and type "ping sitename" (without quotes) where site name could be any site name you want to block such as Facebook.. It should look like this --> 31.13.70.49 www.facebook.com
Available link for download
Thursday, February 23, 2017
Structure Part I The Basics
Structure Part I The Basics
Today we are going to go through Structures from defining structures to using structures.
Structures are just a collection of different types under one roof (you can even put one type only!). So that means they give you flexibility of grouping different data types (like int, char, or even char[]) under one name.
So let us start with obviously defining a Structure. In `C` we declare a structure as simply as this:-
struct dob {
int day;
int month;
int year;};
1: In the above code segment struct is a keyword which defines structure.
2: Followed by struct keyword (dob) is the name of our structure.
3: Elements of struct are defined inside braces ‘{}’ as we did (int day; etc).
4: After ending brace we place a terminator ‘;’ to end the declaration.
So now you know how to define a structure but how to create its instances now?
To create a variable of our structure we just need to do this:
struct dob date;
This now declares date as a structure variable of type dob.
1: Here ‘struct dob’ is our above declared structure.
2: date is a variable of type dob.
So ok we have a structure and a variable of that type but how can i access its parts?
well we can access it and assign it so simply like this:-
date.day = 19;date.month = 10;date.year = 1990;
Note here we use the dot (.) operator to access the fields (parts) of our structure.
ok everything looks nice so for but how in the world can i read data into this structure variable? Again no worries its again simple:-
scanf(“%d”, &date.day);scanf(“%d”, &date.month);
that was pretty easy but I was wondering how can i print its data?
Just do it like this:-
printf(“Day: %d”, date.day);printf(“Month: %d”,date.month);printf(“Year: %d”, date.year);
Again remember we use dot (.) operator to access members of a structure.
So we now know how to define and declare a structure, how to access its members, how to read data in it, and how to print data of a structure. Oh that was a tough job..!
Now let us put it together in a single C Program.
/***********************************************/Output:
#include <stdio.h>
struct dob {
int day;
int month;
int year;
};
int main(void) {
struct dob date;
date.day = 19;
date.month = 10;
date.year = 1990;
printf(“Day is : %d, Month is: %d, and Year is %d ”,
date.day,date.month, date.year);
printf(“Enter Day, Month, and Year separated by spaces: “);
scanf(“%d %d %d”, &date.day,&date.month,&date.year);
printf(“Your entered Date is: %d/%d/%d”,
date.day,date.month,date.year);
return 0;
}
Day is : 19, Month is: 10, and Year is 1990
Enter Day, Month, and Year separated by spaces: 1 1 2014
Your entered Date is: 1/1/2014
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