Control-flow is the process of defining the rules and automatic decisions your workflow will take, through the use of if/else decisions, loops, and so on. In this video, we're going to use the IF-else decision in both the flowchart mode and the sequence mode. Using these conditions, we’ll make a workflow that checks if a certain year is Leap Year or not. It does that by testing if the specific year is a multiple of 4. Solution: There are a few options but the easiest solution is the use of modulus operator. It works by giving us the remainder of a division operation. So if the remainder of a number is a 0, this means it's a leap year. Also, we’ll be adding a couple of message-boxes for the True and False situations in case our conditions has met or not. Using Loops Loops are structures used to automate repetitive tasks. In our flowchart, if we want to start the process again when we haven't found a leap year, we’ll just connect the end of this branch of the workflow, to where we want the execution to resume. Do While vs For Each It's pretty clear that the while and doWhile loops are almost the same thing. They work by repeating the set of actions in the {body} while the {condition} is true. The only difference between the two is the order in which the 2 elements are executed. For the While loop, if the condition is met, the set of actions in the body are executed. For the Do/While loop, the actions are executed and then, if the condition is met, the actions are executed again. The ForEach loop is a bit different. It works by iterating through a list of items, one item at a time, and executing whatever actions are in the {Body} of the action. Remember the use of the correct variable when dealing with different data types. We will show you the common ways you can do to prevent errors in using different variable types. https://www.uipath.com/guides/about-control-flow

• published: 28 Jul 2016
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