How to understand Swift conditional statement

This article mainly introduces "how to understand Swift conditional statements". In daily operation, I believe many people have doubts about how to understand Swift conditional statements. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "how to understand Swift conditional statements". Next, please follow the editor to study!

Guided Swift is an open source programming language that supports multiple programming paradigms and compilations.

Conditional statements execute the program through one or more conditions set, execute the specified statement when the condition is true, and execute another specified statement when the condition is false.

You can use the following figure to briefly understand the execution of conditional statements:

Swift provides the following types of conditional statements:

Operator

We have explained the conditional operator?: in the previous section, which can be used instead of the if...else statement. Its general form is as follows:

Exp1? Exp2: Exp3

Where Exp1, Exp2, and Exp3 are expressions. Please note the use and location of colons.

? The value of the expression is determined by Exp1. If Exp1 is true, the value of Exp2 is calculated, and the result is the entire? The value of the expression. If Exp1 is false, the value of Exp3 is calculated, and the result is the whole? The value of the expression.

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