< cpp | language
C++C Language Format
Language | ||||
Standard Library Headers | ||||
Freestanding and hosted implementations | ||||
Named requirements | ||||
Language support library | ||||
Concepts library(C++20) | ||||
Diagnostics library | ||||
Utilities library | ||||
Strings library | ||||
Containers library | ||||
Iterators library | ||||
Ranges library(C++20) | ||||
Algorithms library | ||||
Numerics library | ||||
Input/output library | ||||
Localizations library | ||||
Regular expressions library(C++11) | ||||
Atomic operations library(C++11) | ||||
Thread support library(C++11) | ||||
Filesystem library(C++17) | ||||
Technical Specifications |
Labels | ||||
label : statement | ||||
Expression statements | ||||
expression ; | ||||
Compound statements | ||||
{ statement.. } | ||||
Selection statements | ||||
if | ||||
switch | ||||
Iteration statements | ||||
while | ||||
do-while | ||||
for | ||||
range for(C++11) | ||||
Jump statements | ||||
break | ||||
continue | ||||
return | ||||
goto | ||||
Declaration statements | ||||
declaration ; | ||||
Try blocks | ||||
try compound-statementhandler-sequence | ||||
Transactional memory | ||||
synchronized , atomic_commit , etc(TM TS) |
In C, there are four types of casting operators. In this article we will only be looking into the first three casting operators as dynamiccast is very different and is almost exclusively used for handling polymorphism only which we will not be addressing in this article. By glancing at the line of code above. I searched a lot but there seems to be no way to have additional color schemes in Dev C. The existing ones are way too bland. Also, I am no good at colors, yet, it feels as if I don't have the control to choose enough colors in the Editor Options. Is there a workaround? Can anyone port this.
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Transfers control to one of the several statements, depending on the value of a condition.
[edit]Syntax
attr(optional)switch ( condition) statement | (until C++17) |
attr(optional)switch ( init-statement(optional)condition) statement | (since C++17) |
attr(C++11) | - | any number of attributes |
condition | - | any expression of integral or enumeration type, or of a class type contextually implicitly convertible to an integral or enumeration type, or a declaration of a single non-array variable of such type with a brace-or-equals initializer. |
init-statement(C++17) | - | either
|
statement | - | any statement (typically a compound statement). case: and default: labels are permitted in statement and break; statement has special meaning. |
attr(optional)case constant_expression: statement | (1) |
attr(optional)default : statement | (2) |
constant_expression | - | a constant expression of the same type as the type of condition after conversions and integral promotions |
[edit]Explanation
Dev C++ Format Looks Good
The body of a switch statement may have an arbitrary number of
case:
labels, as long as the values of all constant_expressions are unique (after conversions/promotions). At most one default:
label may be present (although nested switch statements may use their own default:
labels or have case:
labels whose constants are identical to the ones used in the enclosing switch)If condition evaluates to the value that is equal to the value of one of constant_expressions, then control is transferred to the statement that is labeled with that constant_expression.
If condition evaluates to the value that doesn't match any of the
case:
labels, and the default:
label is present, control is transferred to the statement labeled with the default:
label.The break statement, when encountered in statement exits the switch statement:
Compilers may issue warnings on fallthrough (reaching the next case label without a break) unless the attribute [[fallthrough]] appears immediately before the case label to indicate that the fallthrough is intentional.If init-statement is used, the switch statement is equivalent to
Except that names declared by the init-statement (if init-statement is a declaration) and names declared by condition (if condition is a declaration) are in the same scope, which is also the scope of statement. | (since C++17) |
Because transfer of control is not permitted to enter the scope of a variable, if a declaration statement is encountered inside the statement, it has to be scoped in its own compound statement:
[edit]Keywords
switch,case,default
[edit]Example
The following code shows several usage cases of the switch statement
Output:
[edit]See also
C documentation for switch |
Retrieved from 'https://en.cppreference.com/mwiki/index.php?title=cpp/language/switch&oldid=117569'
I searched a lot but there seems to be no way to have additional color schemes in Dev C++. The existing ones are way too bland. Also, I am no good at colors, yet, it feels as if I don't have the control to choose enough colors in the Editor Options. Is there a workaround? Can anyone port '>this?
Certainly some may say this is a lot of fuss over nothing. But, I believe its really important.
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No one has an answer? Or is it that Dev C++ does not have such features. Tell me about a good editor (if not an IDE) which is good features and additional color scheme adding capability.