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It's a good book depending upon which level you want to learn. Sumita Arora will give you the basics of class 11th and you will be able to program small applications and understand basic concept of C++, but if you want to advance and learn more wait for 12th class because Sumitra Arora of 12th class contains important topics such as file handling and pointers etc. Which you will need to make actual function programs.
But for class 11th, I think it is more than enough unless and until you want to explore some areas of class 12 to go into more advanced programming.
After all programming is not just a cramming subject and needs more and more practice on actual machine, you cannot just mug all up for exams and for future. Just try to understand the concepts and basics both coding and theory part is important for computer science.
First of all, I want to point out that. I really like this type of content. Boating, yachting, sailing, fishing and anything that falls under the concept of a marina.
I leave this information below for those who want to read it. A look at Boat and Yacht History:
the ships we encounter today are; They are large, robust and self-propelled watercraft used to transport cargo across the seas and oceans. This was not the case hundreds of years ago, and current ships went through centuries of development until they became what they are today.
In ancient times, sailors used rafts, bamboo logs, reed bales, inflated animal hides, and baskets covered with pitch to cross small bodies of water.
As a matter of fact, the first boat; it was in the form of a simple frame made of interconnected rods and sewn animal hides that skillfully covered them. These boats could easily carry large and heavy loads. Information about similar old boat examples; You can find it among bull boats, Eskimo canoes, and British Islander merchant ships on the North American plains. In addition to these, another old-style boat is the one carved from the log and the ends of which are sharpened. Some of these were 60 feet (approx. 18 m) long.
When we look at the history of seafaring in ancient times, we come across a very interesting study of human strength and survival instincts. For example, in ancient times, the simple shovel mechanism we know was not used. Instead, people used their hands to move through the water in tiny boats. They propelled their rafts forward, pushing the masts to the bottom of the rivers. Increasingly, using his creative instincts and ingenuity, man redesigned the posts by straightening them and widening one end, thus making it usable in deeper waters. Later, this form was masterfully redeveloped and the blade fixed to the sides of the boat was transformed into the shape of a wide oar.
Invention of the sail The invention of the sail was the greatest turning point in maritime history. Sails replaced human muscle movements, and sailboats were able to travel longer with heavier loads. The first ships used square sails, which were best suited to sail downwind. Side sails were invented later.
The Egyptians credit the emergence of advanced sailing cargo ships. These were made by connecting and stitching together small pieces of wood. These cargo ships were used to transport large stone pillars used in the construction of monuments.
Here are the contents I love about two beautiful marinas.