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CHRISTOPHER BARTHOLOMEW: Welcome back.
[Powered by Google Translate] Christopher Bartolomeu: Benvido de volta.
In another video, we discussed the char data type in C which
Noutro vídeo, discutir o tipo de datos char en C
can be used to hold letters, numbers and special characters
poden ser usados ​​para soster as letras, números e caracteres especiais
such as the question or exclamation mark.
como a cuestión ou punto de exclamación.
We know that an individual char has an ASCII value, which
Sabemos que un carácter individuo ten un valor ASCII, que
is an integer representation of the character.
é unha representación de enteiro do personaxe.
For example, capital letter A's ASCII value is 65.
Por exemplo, o valor ASCII letra maiúscula A é 65.
But in C, what do we use for actual words or sentences such
Pero en C, o que imos usar para palabras reais ou frases tales
as programming, or "C is beautiful?"
como programación, ou "C é bonito?"
The answer is a string--
A resposta é unha cadea -
but to be more specific, it is a character string.
Pero, para ser máis específico, é unha cadea de caracteres.
A character string, or a string, is a sequence of one
Unha cadea de caracteres, ou unha cadea, é unha secuencia de un
byte chars that are stored alongside
caracteres de bytes que se almacenan xunto
each other in memory.
uns aos outros na memoria.
And at the end of any character string in the C
E ao final de calquera cadea de caracteres en C
language, there's one additional byte that is
linguaxe, hai un byte adicional que é
allocated for a special character--
alocado para un carácter especial -
backslash 0, which is the null termination character.
backslash 0, que é o carácter de terminación nula.
The null termination character is a 1 byte char whose bits
O carácter de terminación nulo é un char 1 byte cuxos bits
are all 0 and it is used to signal the end
son todos 0, e se usa para sinalizar o fin
of a string in memory.
dunha secuencia na memoria.
This means whether you intend to initialize your string as
Isto significa que se pretende iniciar a súa secuencia como
the sentence "C is fun," or just the word "fun," at the
a frase "C é divertido", ou só a palabra "diversión", no
end there will always be a null termination character
fin haberá sempre un carácter de terminación nula
indicating that the string has ended.
o que indica que a corda acabou.
To use a string in your program, it is recommended
Para usar unha secuencia no seu programa, recoméndase se
that you initialize your variable as this--
que arrincar a súa variable como este -
chart star S equals open quote, your string, close
Mapa de estrelas S é igual a cita aberto, a súa secuencia, preto
quote, semicolon.
coma cita.
In this variable definition, variable S points to the first
Nesta definición variable, variable S apunta para o primeiro
character in our string, which is C. You see, because we now
carácter da nosa cadea, que é C. Vostede ve, porque agora
know the entire string is stored sequentially in memory,
coñecer toda a cadea é almacenado secuencialmente na memoria,
we can retrieve the string with no problems as we also
podemos recuperar a secuencia sen problemas como nós tamén
know where it ends, too--
sabe onde remata, tamén -
the null termination character.
o carácter de terminación nula.
So have fun.
Entón, divírtete.
I'm Christopher Bartholomew, this is cs50.
Eu son Christopher Bartolomeu, este é CS50.
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