48 lines
1.1 KiB
Markdown
48 lines
1.1 KiB
Markdown
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# Goto and labels
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**NOTE:** goto statements and labels are not yet supported. They are a planned feature, but will take a long time until they are implemented
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## Labels
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A label is used to name a line of code. It is used as a point to which `goto` can go.
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### Syntax
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The syntax of a label is an identifier, followed by a colon. A label must be between the end of one and the start of another statement. For example, this is a valid label:
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```c
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int a = 10; label: a++;
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```
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But this is not:
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```
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int a = label: 10;
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```
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## Goto
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A goto statement is used to redirect the flow of execution to another part of the code. It can be used to skip or loop parts of the code.
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### Syntax
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A goto statement consists of the `goto` keyword, followed by an identifier (the name of a label). A label may be referenced by a goto statement before or after the label's definition.
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## Possible compiler optimizations
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If the compiler determines that a `goto` statement makes a part of the code inaccessible, for example:
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```c
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// first example
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goto label;
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printf("I hate ++C");
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label:
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// second example
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label:
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printf("I love ++C");
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goto label;
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printf("I hate ++C");
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```
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