<s>
Escape	O
sequences	O
are	O
used	O
in	O
the	O
programming	O
languages	O
C	B-Language
and	O
C++	B-Language
,	O
and	O
their	O
design	O
was	O
copied	O
in	O
many	O
other	O
languages	O
such	O
as	O
Java	B-Language
,	O
PHP	B-Application
,	O
C#	B-Application
,	O
etc	O
.	O
</s>
<s>
In	O
C	B-Language
,	O
all	O
escape	O
sequences	O
consist	O
of	O
two	O
or	O
more	O
characters	O
,	O
the	O
first	O
of	O
which	O
is	O
the	O
backslash	O
,	O
(	O
called	O
the	O
"	O
Escape	B-Algorithm
character	I-Algorithm
"	O
)	O
;	O
the	O
remaining	O
characters	O
determine	O
the	O
interpretation	O
of	O
the	O
escape	O
sequence	O
.	O
</s>
<s>
This	O
is	O
not	O
valid	O
in	O
C	B-Language
,	O
since	O
a	O
string	O
literal	O
may	O
not	O
span	O
multiple	O
logical	O
source	O
lines	O
.	O
</s>
<s>
This	O
can	O
be	O
worked	O
around	O
by	O
printing	O
the	O
newline	O
character	O
using	O
its	O
numerical	O
value	O
(	O
in	O
ASCII	B-Protocol
)	O
,	O
</s>
<s>
This	O
instructs	O
the	O
program	O
to	O
print	O
,	O
followed	O
by	O
the	O
byte	B-Application
whose	O
numerical	O
value	O
is	O
,	O
followed	O
by	O
.	O
</s>
<s>
While	O
this	O
will	O
indeed	O
work	O
when	O
the	O
machine	O
uses	O
the	O
ASCII	B-Protocol
encoding	O
,	O
it	O
will	O
not	O
work	O
on	O
systems	O
that	O
use	O
other	O
encodings	O
,	O
that	O
have	O
a	O
different	O
numerical	O
value	O
for	O
the	O
newline	O
character	O
.	O
</s>
<s>
It	O
is	O
also	O
not	O
a	O
good	O
solution	O
because	O
it	O
still	O
does	O
not	O
allow	O
to	O
represent	O
a	O
newline	O
character	O
inside	O
a	O
literal	O
,	O
and	O
instead	O
takes	O
advantage	O
of	O
the	O
semantics	O
of	O
printf	B-Language
.	O
</s>
<s>
In	O
order	O
to	O
solve	O
these	O
problems	O
and	O
ensure	O
maximum	O
portability	O
between	O
systems	O
,	O
C	B-Language
interprets	O
inside	O
a	O
literal	O
as	O
a	O
newline	O
character	O
,	O
whatever	O
that	O
may	O
be	O
on	O
the	O
target	O
system	O
:	O
</s>
<s>
After	O
seeing	O
the	O
backslash	O
,	O
the	O
compiler	O
expects	O
another	O
character	O
to	O
complete	O
the	O
escape	O
sequence	O
,	O
and	O
then	O
translates	O
the	O
escape	O
sequence	O
into	O
the	O
bytes	B-Application
it	O
is	O
intended	O
to	O
represent	O
.	O
</s>
<s>
Some	O
languages	O
do	O
n't	O
have	O
escape	O
sequences	O
,	O
for	O
example	O
Pascal	B-Application
.	O
</s>
<s>
The	O
following	O
escape	O
sequences	O
are	O
defined	O
in	O
standard	O
C	B-Language
.	O
This	O
table	O
also	O
shows	O
the	O
values	O
they	O
map	O
to	O
in	O
ASCII	B-Protocol
.	O
</s>
<s>
However	O
,	O
these	O
escape	O
sequences	O
can	O
be	O
used	O
on	O
any	O
system	O
with	O
a	O
C	B-Language
compiler	O
,	O
and	O
may	O
map	O
to	O
different	O
values	O
if	O
the	O
system	O
does	O
not	O
use	O
a	O
character	B-General_Concept
encoding	I-General_Concept
based	O
on	O
ASCII	B-Protocol
.	O
</s>
