Question: Evaluate the final test scores of Students
Score> = 90:
90> score> = 80: B
80> score> = 70: c
70> score> = 60: d
Solution 1: If else if is not understood, and this error is easy to make.
If (score> = 90) // condition 1 {console.
The code we see earlier is executed sequentially, that is, the first statement is executed first, then the second, the third ... Until the last statement.
However, in many cases, sequential structure of the code is far from enough, such as a
Conditional statement, which is a kind of statement that chooses to execute according to the condition in the program, the difficulty lies in how to abstract the condition accurately in the actual use of such statement. For example, to implement the
If
(PHP 4, PHP 5)
The IF structure is one of the most important features in many languages, including PHP, which allows code snippets to be executed on a conditional basis. The IF structure of PHP is similar to the C language:
As defined in the
The strange if-else, javascriptif-else in javascript
Recently, my head is a bit dizzy. When I write the if-else code in javascript, I actually added conditions to else. The Code is as follows:
Run this script in IE9 and chrome, and no js error is
The pre-processing process scans the source code and performs initial conversion to generate new source code for the compiler. It can be seen that the preprocessing process processes the source code prior to the compiler.
In C language, there is
1. If
The IF structure is one of the most important features in many languages, including PHP, which allows code snippets to be executed on a conditional basis. The IF structure of PHP is similar to the C language:
if (expr)Statement
As defined in
The preprocessing process scans the source code, makes a preliminary conversion, and generates a new source for the compiler. The preprocessing process can be seen before the source code is processed by the compiler.In the C language, there is no
The main difference between process-oriented design and object-oriented design is whether to use lengthy if else judgment at the business logic layer. If you are still using the if else in large quantities, except for the interface presentation
The main difference between process-oriented design and object-oriented design is whether to use lengthy if else judgment at the business logic layer. If you are still using the if else in large quantities, except for the interface presentation
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