Reposted from Sina Blog:
1: Why not use the GOTO statement?
Source (from Wikipedia ):
Goto is a statement that can be found in many computer programming languages. It is an English word.GoAndTo. When executing this statement, it transfers the
Goto statements are notorious in C/C ++, and even some books or company programming specifications. The result is that when some programmers see the goto statement being used in a program, they instinctively think that the program is "junk ". In
Once upon a time, how powerful goto was to let the cool man Bloom their superb technologies. Once upon a time, goto became the first of all evil, the goto example only appears in the textbook. There are too many reasons not to use goto, but
Whether goto statements should be used
A goto statement is also known as an unconditional transfer statement , which is usually used in conjunction with a conditional statement to change the flow of the program, allowing the program to go
The goto statement is an unconditional transfer statement that is used in the following format:Goto statement label;Where the label is a valid identifier, with a ":" (colon) that appears somewhere inside the function, after the goto statement is
For goto statements, it is no longer recommended in C/C ++, and there is no goto in Java. Why does the GOTO statement be re-used in C?
First, let's take a look at the usage of the GOTO statement in C:1) The basic function is to execute the
The GOTO statement is a reserved word in Java and is not implemented. However, in other languages (C), Goto is a valid keyword.Although the break and continue supported in Java can implement the GOTO statement function, I personally summarize that
This article reproduced: http://blog.chinaunix.net/uid-26715658-id-3254915.htmlBreak and Continue use the same range, both can be used for loops, and the break in It can also be used for switch. function also has certain similarity, break is
Regarding the use of the goto statement, it is difficult to use it technically. When I write this text about the use of the goto statement, I think it is difficult for beginners to grasp it if the goto is in another position from a complicated
Objective
A goto statement is also called an unconditional transfer statement, and its basic form is as follows:
Statement marking by a valid identifier and symbol ";" , where the identifier's naming convention is the same as the variable name,
The GOTO keyword appears early in the programming language. In fact, Goto is the ancestor of the program control structure of assembly language: "If condition A,
Jump here, or jump there. " If you read the assembly code generated by almost any
Once upon a time, Goto is how to let New bloom their superb skills
Once upon a time, Goto became the head of all evils.
Once upon a time, the Goto only example in the textbook will appear
There are too many reasons not to use Goto, but sometimes, we
If for different situations, need to perform different established operations, if or according to the normal execution process, is unable to complete the task, this time, it is necessary to introduce the concept of process jump, using the process
Thank you for your enthusiastic reply yesterday. I look up at the night sky, and the stars are shining like the eyes of all of you. This makes me realize that not only can I share the results, but also can I share confusion and loneliness. (This is
Once upon a time, Goto is how to let New bloom their superb skills
Once upon a time, Goto became the head of all evils.
Once upon a time, the Goto only example in the textbook will appear
There are too many reasons not to use Goto, but sometimes, we
The goto operator is a new feature added after php5.3+ to jump to another location in the program; the usage is simple: goto followed by a flag with the target location, with a colon marked at the destination, as follows:
Copy Code code as
If you need to execute different established operations for different situations, but you still need to follow the conventional execution process, the task cannot be completed. In this case, you need to introduce the concept of process redirection,
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