Code Style. C/C++

Scheme

Item	Description
Scheme	From this list, select the scheme to be used. The predefined schemes are shown bold. The custom schemes, ones created as copies of the predefined schemes, are in plain text. The location where the scheme is stored is written next to each scheme, for example, the Default scheme is stored in the IDE, the Project scheme is stored in the project.
	Click this button to invoke the list of commands to manage the schemes: Copy to IDE: select this option to copy the scheme settings to CLion. tip The option is available only for the Project scheme. Export: select this option to export the selected scheme in the IntelliJ IDEA code style XML or .clang-format File format (if the CLang Format plugin is enabled). tip The option is available for the Project and IDE schemes. Import Scheme: select this option to import the scheme of the selected type from the specified location. tip The option is available for the Project and IDE schemes. Copy to Project: select this option to overwrite your current project code style settings with the settings from the selected IDE code style scheme. tip The option is available only for IDE schemes. Duplicate: select this option to create a copy of the selected scheme. tip The option is available only for IDE schemes. Reset: select this option to reset the default or bundled color scheme to the initial defaults shipped with CLion. This command becomes available only if some changes have been done. tip The option is available only for IDE schemes. Rename: select this option to change the name of the selected custom scheme. Press `Enter` to save changes, or `Esc` to cancel. tip The option is available only for IDE schemes.

Item

Description

Scheme

From this list, select the scheme to be used. The predefined schemes are shown bold. The custom schemes, ones created as copies of the predefined schemes, are in plain text. The location where the scheme is stored is written next to each scheme, for example, the Default scheme is stored in the IDE, the Project scheme is stored in the project.

Click this button to invoke the list of commands to manage the schemes:

Copy to IDE: select this option to copy the scheme settings to CLion.
tip
The option is available only for the Project scheme.
Export: select this option to export the selected scheme in the IntelliJ IDEA code style XML or .clang-format File format (if the CLang Format plugin is enabled).
tip
The option is available for the Project and IDE schemes.
Import Scheme: select this option to import the scheme of the selected type from the specified location.
tip
The option is available for the Project and IDE schemes.
Copy to Project: select this option to overwrite your current project code style settings with the settings from the selected IDE code style scheme.
tip
The option is available only for IDE schemes.
Duplicate: select this option to create a copy of the selected scheme.
tip
The option is available only for IDE schemes.
Reset: select this option to reset the default or bundled color scheme to the initial defaults shipped with CLion. This command becomes available only if some changes have been done.
tip
The option is available only for IDE schemes.
Rename: select this option to change the name of the selected custom scheme. Press Enter to save changes, or Esc to cancel.
tip
The option is available only for IDE schemes.

Set from

Item	Description
Language	Choose this option to inherit the code style settings from another language. Select the source language from the list, that opens. So doing, only the settings that are applicable to the current language are taken. All the other settings are not affected.
Predefined Style	Choose this option to use one of the well-known code style guidelines. Select one of the following standards from the list. Note: each code style affects only the certain items of base settings and leaves the rest unchanged. Google LLVM LLDB Qt GNU Stroustrup The following styles are applicable for braces placement only: Allman braces Whitesmiths braces K&R braces

Item

Description

Language

Choose this option to inherit the code style settings from another language. Select the source language from the list, that opens. So doing, only the settings that are applicable to the current language are taken. All the other settings are not affected.

Predefined Style

Choose this option to use one of the well-known code style guidelines. Select one of the following standards from the list.

Note: each code style affects only the certain items of base settings and leaves the rest unchanged.

The following styles are applicable for braces placement only:

Tabs and Indents

Item	Description
Use tab character	If this checkbox is selected, tab characters are used: On pressing the `Tab` key For indentation For code reformatting When the checkbox is cleared, CLion uses spaces instead of tabs.
Smart tabs	If this checkbox is selected, the part of indentation defined by the nesting of code blocks, is made of the tabs and (if necessary) spaces, while the part of indentation defined by the alignment is made only of spaces. If this checkbox is cleared, only tabs are used. This means that a group of spaces that fits the specified tab size is automatically replaced with a tab, which may result in breaking fine alignment. The Smart tabs checkbox is available if the Use tab character checkbox is selected.
Tab size	In this field, specify the number of spaces included in a tab.
Continuation indent	In this field, specify the number of spaces to be inserted between the elements of an array, in expressions, method declarations and method calls.
Keep indents on empty lines	If this checkbox is selected, CLion will keep indents on the empty lines as if they contained some code. If this checkbox is cleared, CLion will delete the tab characters and spaces.
Label indent	In this field, specify the number of spaces to be inserted at the next line before a label statement.
Absolute label indent	If this checkbox is selected, label indentation is counted as an absolute number of spaces. Otherwise, label indentation is counted relative to previous indent levels.
Indent in lambdas	In this field, type the indent of lambda expressions.
Indent members of plain structures	In this field, type the indent of the plain structure members.
Indent members of classes	In this field, type the indent of the class members.
Indent visibility keywords in class/structure	In this field, type the indent of the visibility keywords (public, protected, etc).
Indent members of namespace	In this field, type the indent of members of namespaces.
Preprocessor directive indent	In this field type the indent of preprocessor directives.
Follow code indent	Select this checkbox to keep the indent of preprocessor directives equal to that of surrounding code lines.

Spaces

Wrapping and Braces

Braces placement options

Item	Description
Braces placement style	Use this list to specify the position of the opening brace in class declarations, function declarations and other types of declarations. The available options are: End of line: select this option to have the opening brace placed at the declaration line end. Next line if wrapped: select this option to have the opening brace placed at the beginning of the line after the multiline declaration line. Next line: select this option to have the opening brace placed at the beginning of the line after the declaration line. Next line shifted: select this option to have the opening brace placed at the line after the declaration line being shifted to the corresponding indent level. Next line, each shifted: select this option to have the opening brace placed at the line after the declaration line being shifted to the corresponding indent level, and have the next line shifted to the next indent level as well.
Force braces	From this list, choose the braces introduction method for `if`, `for`, `while`, and `do () while` statements. The available options are: Do not force: select this option to suppress introducing braces automatically. When multiline: select this option to have braces introduced automatically if a statement occupies more than one line. Note that CLion analyzes the number of lines in the entire statement but not only its condition. For example, if the code is `int foo (int Days) { if ((Days % 10) == 3) return 1; else return 0; }` CLion will insert braces automatically: `int foo (int Days) { if ((Days % 10) == 3) { return 1; } else { return 0; } }` Always: select this checkbox to have braces always introduced automatically.

Item

Description

Braces placement style

Use this list to specify the position of the opening brace in class declarations, function declarations and other types of declarations. The available options are:

End of line: select this option to have the opening brace placed at the declaration line end.
Next line if wrapped: select this option to have the opening brace placed at the beginning of the line after the multiline declaration line.
Next line: select this option to have the opening brace placed at the beginning of the line after the declaration line.
Next line shifted: select this option to have the opening brace placed at the line after the declaration line being shifted to the corresponding indent level.
Next line, each shifted: select this option to have the opening brace placed at the line after the declaration line being shifted to the corresponding indent level, and have the next line shifted to the next indent level as well.

Force braces

From this list, choose the braces introduction method for if, for, while, and do () while statements. The available options are:

Do not force: select this option to suppress introducing braces automatically.

When multiline: select this option to have braces introduced automatically if a statement occupies more than one line. Note that CLion analyzes the number of lines in the entire statement but not only its condition.

For example, if the code is

int foo (int Days) {
    if ((Days % 10) == 3)
        return 1;
    else
        return 0;
}

CLion will insert braces automatically:

int foo (int Days) {
    if ((Days % 10) == 3) {
        return 1;
    } else {
        return 0;
    }
}

Always: select this checkbox to have braces always introduced automatically.

Blank lines

Item	Description
Keep maximum blank lines	In this area, specify the number of blank lines to be kept after reformatting in the specified locations.
Minimum blank lines	In this area, specify the number of blank lines to be present in the specified locations. warning These settings do not influence the number of blank lines before the first and after the last item.

Item

Description

Keep maximum blank lines

In this area, specify the number of blank lines to be kept after reformatting in the specified locations.

Minimum blank lines

In this area, specify the number of blank lines to be present in the specified locations.

warning
These settings do not influence the number of blank lines before the first and after the last item.

New File Extensions

Item	Description
Source/header file types pane.	The list of source and header file types. All the code style rules specified under this node of Settings, are applicable to the listed file types.
Source Extension	From the drop-down list, choose the extension to be associated with the source files.
Header Extension	From the drop-down list, choose the extension to be associated with the header files.
File Naming Convention	Choose the preferred naming convention from the drop down list. This setting defines a case of the file name generated in the New C++ Class dialog when a new class is being created.

Item	Shortcut	Description
	`AltInsert`	Click this button to add a new source/header file types pair to the list. The new pair is always of .cpp/.h type. When added to the list, assign the desired extensions from the Source Extension/Header Extension dropdown lists to them.
	`AltDelete`	Click this button to remove the selected source/header file types pair from the list.
	`Alt0↑` or `Alt0↓`	Use these buttons to move the selected source/header file types pair up and down in the list.

Code Generation

Item	Description
General	Line comment at first column: If this checkbox is selected, line comments will be aligned at the first column; otherwise, they will be aligned at the code. Block comment at first column: If this checkbox is selected, block comments will be aligned at the first column; otherwise, they will be aligned at the code. Indent new lines in block comments: If this checkbox is selected, each next line of the block code will be indented; otherwise, it will be aligned with the first line of the block. Const/volatile qualifier placement. The setting defines the keywords order during the code generation. Select the const int x = 0 radio button to place the const/volatile qualifier before a type specifier. Select the int const x = 0 radio button to place the const/volatile qualifier between the type specifier and the symbol name.
C++	Prefix for fields: type a prefix that will prepend a name of an automatically generated field. Suffix for fields: type a suffix that will be appended to a name of an automatically generated field. Prefix for getters: type a prefix that will prepend a name of an automatically generated getter. The default name is `get`. Prefix for setters: type a prefix that will prepend a name of an automatically generated setter. The default name is `set`. Generate != together with ==: select this checkbox to enable this setting as default for Select Fields dialog when generating an equality operator. Generate >,<=,>= together with <: select this checkbox to enable this setting as default for Select Fields dialog when generation a relational operator. Insert "virtual" attribute together with "override": select this checkbox to allow inserting the "virtual" attribute together with "override" specifier for inherited functions being generated. This option is available since C++11 standard or later. Use C++ cast operators: when selected, quick fixes will insert C++ cast operators instead of C-style casts when appropriate.
Documentation comments	Add @brief tag: select this checkbox to enable the `@brief` tag in Doxygen-style comments. Tag prefix in line comments: click @param or \param radio button to select the preferred prefix type. Tag prefix in block comments: click @param or \param radio button to select the preferred prefix type.

Item

Description

General

Line comment at first column: If this checkbox is selected, line comments will be aligned at the first column; otherwise, they will be aligned at the code.
Block comment at first column: If this checkbox is selected, block comments will be aligned at the first column; otherwise, they will be aligned at the code.
Indent new lines in block comments: If this checkbox is selected, each next line of the block code will be indented; otherwise, it will be aligned with the first line of the block.
Const/volatile qualifier placement. The setting defines the keywords order during the code generation.
Select the const int x = 0 radio button to place the const/volatile qualifier before a type specifier. Select the int const x = 0 radio button to place the const/volatile qualifier between the type specifier and the symbol name.

C++

Prefix for fields: type a prefix that will prepend a name of an automatically generated field.
Suffix for fields: type a suffix that will be appended to a name of an automatically generated field.
Prefix for getters: type a prefix that will prepend a name of an automatically generated getter. The default name is get.
Prefix for setters: type a prefix that will prepend a name of an automatically generated setter. The default name is set.

Generate != together with ==: select this checkbox to enable this setting as default for Select Fields dialog when generating an equality operator.
Generate >,<=,>= together with <: select this checkbox to enable this setting as default for Select Fields dialog when generation a relational operator.
Insert "virtual" attribute together with "override": select this checkbox to allow inserting the "virtual" attribute together with "override" specifier for inherited functions being generated. This option is available since C++11 standard or later.
Use C++ cast operators: when selected, quick fixes will insert C++ cast operators instead of C-style casts when appropriate.

Documentation comments

Add @brief tag: select this checkbox to enable the @brief tag in Doxygen-style comments.
Tag prefix in line comments: click @param or \param radio button to select the preferred prefix type.
Tag prefix in block comments: click @param or \param radio button to select the preferred prefix type.

Code Style. C/C++﻿

Scheme﻿

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Set from﻿

Tabs and Indents﻿

Spaces﻿

Wrapping and Braces﻿

Hard wrap at﻿

Wrap on typing﻿

Visual guides﻿

Keep when reformatting﻿

Braces placement options﻿

Blank lines﻿

warning

New File Extensions﻿

Code Generation﻿

Naming Convention﻿

Scheme

Set from

Tabs and Indents

Spaces

Wrapping and Braces

Hard wrap at

Wrap on typing

Visual guides

Keep when reformatting

Braces placement options

Blank lines

New File Extensions

Code Generation

Naming Convention