Objective
Process Control statement:
In the process of executing a program, the order of execution of each statement has a direct effect on the result of the program. That is to say, the process of the program has a direct impact on the running
When programming, you often need to check a series of conditions and decide what measures to take accordingly. In Python, the if statement enables us to check the current state of the program and take corresponding measures accordingly. 5.1 The
1. Process Control StatementsIn the process of executing a program, the order of execution of each statement has a direct effect on the result of the program. In other words, the process of the program directly affects the results of the operation.
When programming, you often need to check a set of conditions and decide what action to take accordingly. In Python, the IF statement allows us to examine the current state of the program and take appropriate action accordingly.
5.1 A simple
One way to "make something happen" is to evaluate an expression with a side effect. Injected assignments and function calls these expressions with side-effects can be used as separate statements, and this expression is also called an expression
In php, if else or switch statements are used most frequently, next, I will give you a detailed introduction to my notes on using the if else Conditional Control statement in php. if you need it, please refer to it.
In php, the basic process control
If ... Then ... Else statementConditionally executes a set of statements based on the value of an expression.
If condition Then statements [Else elsestatements]
Or, use block-form syntax:
If condition Then[Statements][ElseIf condition-n
1, if statement
An If statement is an important feature in most languages, and it executes the program segment according to the conditions. PHP's If statement is similar to C:
if (expr)
Statement
As discussed in an expression, expr is computed
------java training, Android training, iOS training,. NET training , look forward to communicating with you! -------1: operator (master)(1) Arithmetic operatorsa:+,-, *,/,%,++,--Note: Integers can only be divided into integers, and if you want
Can not underestimate this simple finally, seemingly simple problems behind, but hidden countless mystery. Next I will take you step-by-step to uncover this finally mysterious veil.Problem Analysisfirst of all, let me ask you a question: Finally
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