What is the return button?

...The landlord sweats one, and the upstairs sweats another ,..

The correct answer is return = return.

It's called your return key.

return indicates that the function under adjustment returns to the main function to continue execution, and the return can be accompanied by a return value, which is specified by the parameter after return.

return is usually necessary because the result of the computation is usually brought out by the return value when the function is called.

If the function execution does not need to return the calculation result, and it is often necessary to return a status code to indicate whether the function is executed smoothly or not (-1 and 0 are the most commonly used status codes), the main tone function can determine the execution of the modulated function through the return value.

If you really don't need a function to return a value, you need to declare its type with void.

Supplement: If you have a return type definition in front of the function name, such as int, double, etc., you must have a return value, and if it is void, you can not write return, but even if you write it, it will not return the value.

For example: 1Non-void type.

int f1()

int i=1;

return 1;

return(i);That's okay too.

type void f2().

int i=1;

return;It's okay to do that, but it's okay not to use this sentence.

The return key, also known as the enter key or the wrap key, is a special key on a computer keyboard. It is usually located in the bottom right corner of the keyboard with an icon with an arrow pointing to the left. The return key has different functions and functions in different contexts, and here are some common uses.

1. Confirm or submit: In many applications and operating systems, pressing the return key is often used to confirm the input or submit the form. For example, in word processing software, pressing the return key moves the cursor to the next line or paragraph and confirms the text input as a complete paragraph.

In a web form, press the return key to submit the form data.

2. Execute commands: In the command line interface or terminal window, pressing the return key is usually used to execute commands. When you finish typing a command, pressing the return key will tell the computer to execute the command.

4. Confirm dialog: In some dialogs, press the return key to confirm or accept the selection. For example, in a confirmation dialog, when the focus is on the confirmation button, press the return key to confirm the selection.

5. Start a new paragraph: In typesetting or word processing, press the return key to start a new paragraph to make the text layout clearer and easier to read.

The function and function of the return key depends on the software, operating system, and context you are using. In some applications or situations, the return key may have other specific functions. Therefore, to understand what the return key does in a particular situation, it is best to refer to the documentation or help documentation for the relevant soft lead related object or system.

The literal translation of return means "enter" in Chinese, so the return key is also a return key. On the computer keyboard, there is a key with the word "enter" written on it and a curved arrow, which is called the "enter key".

Enter key, enter key origin.

As for the origin of the "enter key", we have to start with the mechanical English typewriter. On the mechanical English typewriter, there is a component called the "word car", and every time you type a character (originally a word, but I personally think it should be a character here), the "word car" will advance one square. When a full line of characters is typed, the typist has to push the "word cart" to the starting position, and the typewriter responds with two actions:

The first is that the "word car" is returned to its place, and the second is that the drum rolls up a line in order to start typing the next line, and this action of pushing the "word car" is called "enter". Later, on electric English typewriters, a button was added that directly played the role of "enter". This new key is called the "Enter key".

On the computer keyboard, the words "cr" and "return" were used on the "enter key", and later they were uniformly determined to be "enter".

The carriage enter key is used.

The carriage enter key serves two purposes, one is to confirm the execution of the input command, and the other is to play the role of a line break in word processing.

The Enter key is also one of the most used keys on the computer keyboard, and you should be careful not to slam it hard when using the enter key.

The return key is not on the keyboard, on the console, and it is usually the smaller key below the power button.

It's the backspace key, in the upper right corner of the letter area.