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ALGORITHM



                 Before writing a computer program to solve a problem or to perform any task, a programmer writes
                 the steps for the same. Writing a program becomes easy if the algorithm is written first. Algorithms
                 are used in our daily lives, too. For example, a recipe detailing steps to create a dish is also an
                 algorithm.
                 An  algorithm  is  a  set  of  instructions  or

                 steps  performed  in a specific  order to          Which algorithm is used by Google Maps?
                 solve a problem or to complete a task. In
                 other words, algorithms are the building blocks of computer programs that comprise a sequence
                 of operations  to be performed by the computer in a specific order to solve a problem.

                 USES OF AN ALGORITHM

                 An algorithm is mainly used for:
                   Performing data processing               Performing logical and mathematical operations
                   Manipulating data                        Searching for a particular data
                 Algorithms make decision-making more consistent and efficient.




                            WRITING AN ALGORITHM

                 The algorithm provides a step-by-step solution to the problem. Let’s write algorithms for some

                 problems.
                 MAKING A CUP OF TEA                                         CALCULATE  THE SUM OF  TWO
                 Step  1   Start.                                            NUMBERS
                 Step  2    Collect  Kettle,  Teabags, water, milk,  sugar,   Step  1   Start.
                           and cup.                                          Step  2    Read two numbers and store
                 Step  3   Boil the water in the kettle.                               them in A and B.
                 Step  4   Pour the boiling water into the cup.              Step  3   Add two numbers A and B.

                 Step  5    Add milk, sugar and put a teabag in the cup.     Step  4   Print the sum.
                 Step  6   Stir the tea, and the tea is ready.               Step  5   Stop.
                 Step  7   Stop.
                 CALCULATING THE AREA OF A CIRCLE
                 Step  1   Start.


                 Step  2    Read the radius of the circle and store it in r. (where, r is the length from the centre of
                           the circle to the edge of the circle.)
                                                                                2
                 Step  3   Calculate the area of the circle. (where, Area = π × r (3.14 × radius × radius))
                 Step  4   Print the area.
                 Step  5   Stop.




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