ABL electronic PIC Microcontrollers PIC16 - Manual (Page 131)

You can use
goto
to break out from any level of nested control structures. But,
goto
cannot be used to jump into block while skipping that block’s initializations
– for example, jumping into loop’s body, etc.
Use of
goto
statement is generally discouraged as practically every algorithm can
be realized without it, resulting in legible structured programs. One possible appli-
cation of
goto
statement is breaking out from deeply nested control structures:
for (...) {
for (...) {
...
if (disaster) goto Error;
...
}
}
.
.
.
Error: /* error handling code */
Return Statement
Use the
return
statement to exit from the current function back to the calling
routine, optionally returning a value. Syntax is:
return [ expression ];
This will evaluate the
expression
and return the result. Returned value will be
automatically converted to the expected function type, if needed. The
expres-
sion
is optional; if omitted, function will return a random value from memory.
Note: Statement
return
in functions of void type cannot have an
expression
–
in fact, you can omit the
return
statement altogether if it is the last statement in
the function body.
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