Dev C++ If Statement
If statement in C/C. If statement is the most simple decision making statement. It is used to decide whether a certain statement or block of statements will be executed or not i.e if a certain condition is true then a block of statement is executed otherwise not. Dec 21, 2008 29 videos Play all C Programming Tutorials from thenewboston thenewboston C Tutorial - 9 - using if else if statement - Duration: 5:04. PRABEESH R K 53,313 views. The use of a block tells the compiler that the else statement should attach to the if statement before the block. Without the block, the else statement would attach to the nearest unmatched if statement, which would be the inner if statement. Using logical operators with if statements. You can also have if statements check multiple conditions together by using the logical operators (covered. Dec 21, 2008 29 videos Play all C Programming Tutorials from thenewboston thenewboston C Tutorial for Beginners 6 - If and Else Statements - Duration: 10:18. ProgrammingKnowledge 84,196 views.
C++| 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) |
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)caseconstant_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
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.
Dev C++ If Statement Example
Turbo C If Statement Examples
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 If init-statement is used, the switch statement is equivalent to Download xfer serum free.
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
Dev C If Statement Format
switch,case,default
[edit]Example
The following code shows several usage cases of the switch statement
Output:
Tune Up Service: Ignition System and Spark Plugs. When your vehicle is properly tuned, the ignition system, fuel system, emission system and computer system all work together in perfect harmony. This results in peak combustion chamber efficiency, improving performance, saving you money at the gas pump and making sure your car is emitting a minimal amount of pollutants. Precision tune up coupons.
[edit]See also
C documentation for switch |