Introduction to C Programming-Algorithms

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How To Implement Static Variable In C? How To Implement Queue in C? How To Implement Circular Queue in C? What is Embedded C programming and how is it different? Introduction to C Programming-Algorithms Last updated on May 07,2020 26.4K Views edureka Bookmark Introduction to C Programming-Algorithms What is algorithm?An algorithmis a procedure or step-by-step instruction for solving a problem.They form the foundation of writing a program. For writing any programs, the following has to be known:InputTasks to be preformedOutput expectedFor any task, the instructions given to a friend is different from the instructions given to a computer. Lets look at the difference between them and know how to give instructions to a computer.Instruction to a Friend:Step 1: Go to the College Board.Step 2: Search for my name on the board.Step 3: Check the rank against my name.Instructions to the Computer:Step 1: Go to the College Board.Step 2: Read the first name.Step 3: If this is my name, see rank and come back.Step 4: Read the next name.Step 5: Repeat the above two steps until you find my name.Breaking down the steps into smaller steps is called algorithm.Example:Considering the above example, lets break down the task into steps:Input NameTasks to be preformed Search for my name Output expected My rankIt is a good practice to write down the algorithm first before attempting at writing a program. Each step of the algorithm will get converted to a line or a set of lines in the programming language.More Examples for understanding the concept of Algorithms: Example 1: Telling A Friend How To Boil Water In A Kettle.Lets look at the 3 requirements for writing an algorithm for this task:Input Kettle, WaterTasks to be preformed Boiling water, fill up the kettleOutput expected Boiled waterInstructions to a Friend:Step 1: Fill the kettle with water.Step 2: Place it on the stove and turn on the bu rner.Step 3: Turn off the burner when the water starts boiling.Instructions to the Computer:Step 1: Put the kettle under the tap.Step 2: Turn on the tap.Step 3: Check if 90% of the kettle is filled.Step 4: If not, repeat the above step.Step 5: Turn off the tap.Step 6: Place the kettle in the burner.Step 7: Turn on the burner.Step 8: Check if the water is 100 CStep 9: If not, repeat the above step.Step 10: Turn off the burner.Example 2: Shopping on M.G RoadLets break down the task of buying a red color shoe with a bow, from the Bata showroom. The following are the 3 requirements for writing an algorithm for this task:Input Name of the shop, name of the road, color of the shoe, size of the shoe.Tasks to be preformed Shopping.Output expected Shoe.The algorithm of this task for a friend is fairly easy and simple. So, lets look at the algorithm for the computer.Step 1: Walk to the first shop on M.G road.Step 2: Check if this in the Bata Showroom.Step 3: Enter the shop and ask for a re d shoe size 5.Step 4: Buy the shoe and come back.Step 5: Go to the next shop, repeat step 2Writing algorithms is a crucial step in programming. Take up more real life examples and try to write algorithms for them, and keep practising till the time writing algorithms becomes second nature to you.Got a question for us? 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