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C# if...else if (if-then-else if) Statement. When we have only one condition to test, if-then and if-then-else statement works fine. But what if we have a multiple condition to test and execute one of the many block of code. For such case, we can use if..else if statement in C#. The syntax for if...else if statement is:
C# provides many decision-making statements that help the flow of the C# program based on certain logical conditions. Here, you will learn about if, else if, else, and nested if else statements to control the flow based on the conditions.
C# has the following conditional statements: Use if to specify a block of code to be executed, if a specified condition is true. Use else to specify a block of code to be executed, if the same condition is false. Use else if to specify a new condition to test, if the first condition is false.
C#'s if/else statement branches code flow based on a true/false expression. When true, code below if executes. Else code under else runs.
How advanced those decisions are depends on the if statement’s condition. Plenty of if statements evaluate a single Boolean expression. But for advanced logic we have to combine several true/false expressions into a single trueor falsevalue. Let’s see which C# operators make that possible.
But often a single if statement is not enough to test multiple, dependent conditions. Luckily, we can place an if statement inside another for complex logical code. Let’s see how those nested if statements work. Multiple conditions with nested ifs.
An if statement can be used to conditionally execute code. The condition of an if statement must be of type bool. C# has no concept of truthy values. The most common way to do this in C# is by using an if/else statement: int x = 6; if (x == 5) {. // Execute logic if x equals 5. }