As mentioned before, boolean values are simply true-or-false. In Objective-C, unlike many other languages, they are represented as YES or NO: BOOL trueOrFalse = YES; BOOL gameOver = NO; Internally, however, they are stored as zero and one. if() Statements The if() statement is ...
Boolean logic with if statements [25 of 51] Beginner's Series to: JavaScript Oct 5, 2020 Applications make decisions. The core to any decision making is branching using an if statement. We're going to talk through how Boolean values work, and the core syntax for if stateme...
示例1:布尔表达式中带有数字值的IF语句(Example 1: IF Statement with a numeric value in a Boolean expression) In the following example, we specified a numeric value in the Boolean expression that is always TRUE. It prints the statement for If statement because the condition is true. 在下面的示...
By putting a single exclamation mark before a statement, youreverse the boolean. For example,!truewouldequal falseand!falsewillequal true. If putting the exclamation before a statement with spaces or symbols in between (eg. 1 + 2 == 3 as supposed to true),don’t forget to surround it wi...
the condition you pass evaluates to “True” (a Boolean value which we’ve discussed in the last post), python will run the following code within the if statement. Likewise, if the condition evaluates to “False”, it will not run the code within the “if” statement and simply move on...
' This statement prints TruePart, because the first argument is true.Console.WriteLine(If(True,"TruePart","FalsePart"))' This statement prints FalsePart, because the first argument is false.Console.WriteLine(If(False,"TruePart","FalsePart"))Dimnumber =3' With number set to 3, this stateme...
Using if Statement We can use an if statement with different variations to determine whether the provided Boolean variable is true. Note that the examples covered in this section will be similar. We will learn the first example in Use if with true Condition in detail, but later, we will dis...
Use logical operators to combine multiple conditions in an if statement Logical operatorscreate complex conditions from simple ones. This enables you to write advanced logic and simplify certain types of conditions that contain onlybooleanvalues. ...
elseif 语句的条件必须是一个布尔值
An if statement with an else part selects one of the two statements to execute based on the value of a Boolean expression, as the following example shows: csharp Copy Run DisplayWeatherReport(15.0); // Output: Cold. DisplayWeatherReport(24.0); // Output: Perfect! void DisplayWeatherR...