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Hi! I am Studyfin, your coding buddy. Today, we will learn how to find and fix mistakes in our code!
Have you ever made a mistake while writing a recipe or drawing a picture? In coding, a mistake in your instructions is called a bug. Finding and fixing these mistakes is called debugging.
An algorithm is just a list of steps to finish a task. If the steps are in the wrong order, our program will get confused. To debug, we must check each step one by one.
When we debug, we look for steps that are missing, out of order, or incorrect. Fixing a bug makes our code run perfectly!
Let's debug an algorithm for making a peanut butter sandwich. The current steps are: 1. Spread peanut butter on the bread. 2. Eat the sandwich. 3. Put two slices of bread on a plate. Let's find the errors and fix them!
- Analyze the goal: We want to make a sandwich before we eat it.
- Identify the errors: Step 2 says to eat the sandwich before we even put the bread on the plate (Step 3). That is impossible!
- Rearrange the steps: Put the bread on the plate first.
- Add the next step: Spread the peanut butter on the bread.
- Finish the algorithm: Eat the sandwich as the final step. Now the bug is fixed!
