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The detailed semantics of "the" ternary operator as well as its syntax differs significantly from language to language. A top level distinction from one language to another is whether the expressions permit side effects (as in most procedural languages) and whether the language provides short-circuit evaluation semantics, whereby only the selected expression is evaluated (most standard ...
If-then-else flow diagram A nested if–then–else flow diagram. In computer science, conditionals (that is, conditional statements, conditional expressions and conditional constructs) are programming language constructs that perform different computations or actions or return different values depending on the value of a Boolean expression, called a condition.
Single-line, when instructions are instruction 1 : instruction 2 : ...: If condition Then instructions «Else instructions» If condition Then instructions ElseIf condition Then instructions... «Else instructions» End If Single-line: See note about C-like languages; the Else clause of a single-line If statement can contain another single-line ...
Languages that interpret the end of line to be the end of a statement are called "line-oriented" languages. "Line continuation" is a convention in line-oriented languages where the newline character could potentially be misinterpreted as a statement terminator. In such languages, it allows a single statement to span more than just one line.
A snippet of Java code with keywords highlighted in bold blue font. The syntax of Java is the set of rules defining how a Java program is written and interpreted. The syntax is mostly derived from C and C++. Unlike C++, Java has no global functions or variables, but has data members which are also regarded as global variables.
Most languages support multi-line block (a.k.a. stream) and/or single line comments. A comment block or sequence of line comments located near the top of an associated programming topic, such as before a symbol declaration or at the top of a file, is called a prologue comment .
<statement> is any single statement (could be simple or compound). <sequence> is any sequence of zero or more <statements> Some programming languages provide a general way of grouping statements together, so that any single <statement> can be replaced by a group: Algol 60: begin <sequence> end; Pascal: begin <sequence> end; C, PHP, Java ...
Switch statements function somewhat similarly to the if statement used in programming languages like C/C++, C#, Visual Basic .NET, Java and exist in most high-level imperative programming languages such as Pascal, Ada, C/C++, C#, [1]: 374–375 Visual Basic .NET, Java, [2]: 157–167 and in many other types of language, using such keywords as ...