C goto Statement: Usage & Examples

In C language, the goto statement is used to unconditionally transfer control of the program to a specified label position. Its basic syntax is as follows:

goto label;
...
...
label: statement;

In this case, label refers to the name of a label, which can be any valid C identifier, while statement refers to the statement executed at the label position.

When using the goto statement, you need to be mindful of the following points:

1. Labels must be defined after goto statements, and the label name must be unique within that scope.
2. Tags cannot have the same name in two different scopes.
3. The initialization of variables cannot be skipped.
4. Avoiding excessive use of the goto statement, as it can make the program difficult to understand and maintain.

Although goto statements can simplify the logic of a program in some cases, excessive use can decrease the readability and maintainability of the code. Therefore, it is recommended to avoid using goto statements as much as possible when writing code, and instead use more structured control structures like loops and conditional statements.