If-else Statement (C); 2 minutes to read +2; In this article. Controls conditional branching. Statements in the if-block are executed only if the if-expression evaluates to a non-zero value (or TRUE). If the value of expression is nonzero, statement1 and any other statements in the block are executed and the else-block, if present, is skipped. If the value of expression is zero. Visual Studio 2017 and later: (available with /std:c17) The fallthrough attribute is specified in the C17 standard. It can be used in a switch statement as a hint to the compiler (or to anyone reading the code) that fall-through behavior is intended. The Microsoft C compiler currently does not warn on fallthrough behavior, so this.
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Definition
Gets or sets the background color used by a DataGridView cell when it is selected.
Property Value
A Color that represents the background color of a selected cell. The default is Empty.
Examples
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- The following table shows the precedence and associativity of C operators (from highest to lowest precedence). Operators in the same segment of the table have equal precedence and are evaluated left to right in an expression unless explicitly forced by parentheses.
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The following code example illustrates the use of this property in a DataGridView control intended primarily for display. In this example, the visual appearance of the control is customized in several ways, and the control is configured for limited interactivity. This example is part of a larger example available in the DataGridViewCellStyle class overview.
Applies to
See also
-->Allows selection among multiple sections of code, depending on the value of an integral expression. Download cooking mama for pc.
Syntax
switch (
[initialization;
] expression)
{
case
constant-expression:
statement[
default :
statement]}
Remarks
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The expression must have an integral type, or be a class type that has an unambiguous conversion to integral type. Integral promotion takes place as described in Standard conversions.
The switch statement body consists of a series of case labels and an optional default label. Collectively, the statements that follow the labels are called labeled statements. The labeled statements aren't syntactic requirements, but the switch statement is meaningless without them. No two constant expressions in case statements may evaluate to the same value. The default label may appear only once. The default statement is often placed at the end, but it can appear anywhere in the body of the switch statement. A case or default label can only appear inside a switch statement.
The constant-expression in each case label is converted to the type of expression. Then, it's compared with expression for equality. Control passes to the statement whose caseconstant-expression matches the value of expression. The resulting behavior is shown in the following table.
Switch statement behavior
Condition | Action |
---|---|
Converted value matches that of the promoted controlling expression. | Control is transferred to the statement following that label. |
None of the constants match the constants in the case labels; a default label is present. | Control is transferred to the default label. |
None of the constants match the constants in the case labels; no default label is present. | Control is transferred to the statement after the switch statement. |
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If a matching expression is found, execution can continue through later case or default labels. The
break
statement is used to stop execution and transfer control to the statement after the switch statement. Without a break statement, every statement from the matched case label to the end of the switch, including the default, is executed. For example:Dev C Selection Black And Gold
In the above example,
uppercase_A
is incremented if c
is an uppercase 'A'
. The break statement after uppercase_A++
terminates execution of the switch statement body and control passes to the while loop. Without the break statement, execution would 'fall through' to the next labeled statement, so that lowercase_a
and other
would also be incremented. A similar purpose is served by the break statement for case 'a'
. If c
is a lowercase 'a'
, lowercase_a
is incremented and the break statement terminates the switch statement body. If c
isn't an 'a'
or 'A'
, the default statement is executed.Visual Studio 2017 and later: (available with /std:c++17) The
[[fallthrough]]
attribute is specified in the C++17 standard. You can use it in a switch statement. It's a hint to the compiler, or anyone who reads the code, that fall-through behavior is intentional. The Microsoft C++ compiler currently doesn't warn on fallthrough behavior, so this attribute has no effect on compiler behavior. In the example, the attribute gets applied to an empty statement within the unterminated labeled statement. In other words, the semicolon is necessary.Visual Studio 2017 version 15.3 and later (available with /std:c++17). A switch statement may have an initialization clause. It introduces and initializes a variable whose scope is limited to the block of the switch statement:
An inner block of a switch statement can contain definitions with initializations as long as they're reachable, that is, not bypassed by all possible execution paths. Names introduced using these declarations have local scope. For example:
A switch statement can be nested. When nested, the case or default labels associate with the closest switch statement that encloses them.
Microsoft-specific behavior
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Microsoft C doesn't limit the number of case values in a switch statement. The number is limited only by the available memory. ANSI C requires at least 257 case labels be allowed in a switch statement.
The default for Microsoft C is that the Microsoft extensions are enabled. Use the /Za compiler option to disable these extensions.
See also
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Selection Statements
Keywords
Keywords