1.1 KiB
Goto and labels
NOTE: goto statements and labels are not yet supported. They are a planned feature, but will take a long time until they are implemented
Labels
A label is used to name a line of code. It is used as a point to which goto can go.
Syntax
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:
int a = 10; label: a++;
But this is not:
int a = label: 10;
Goto
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.
Syntax
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.
Possible compiler optimizations
If the compiler determines that a goto statement makes a part of the code inaccessible, for example:
// first example
goto label;
printf("I hate ++C");
label:
// second example
label:
printf("I love ++C");
goto label;
printf("I hate ++C");