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Download "Programmieren in C Tutorial #02 - Datentypen (Int, Double, Char etc.)"

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C (Programming Language)
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  • ruRussian
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00:00:09
So hello, hello my dear friends to the
00:00:11
second episode of my programming in C
00:00:13
tutorials. Today we're dealing with primitive
00:00:16
data types in C. I've
00:00:18
already pointed it out to you, for example, in our
00:00:20
main function we had int, which stands
00:00:22
for integer and what it all is
00:00:24
and what it is
00:00:26
You will now find out that there are
00:00:29
whole-line data types, which means
00:00:31
no decimal numbers for even numbers, i.e.
00:00:33
natural numbers, then there are
00:00:36
floating-point numbers, i.e. comma numbers, which are
00:00:39
called real numbers and also a data type
00:00:42
for letters. We will now start with
00:00:44
the integers es short that
00:00:47
is a range of values ​​from
00:00:50
-32,000 to +32,000 if now of the
00:00:53
data type short call the thing number 0
00:00:56
and that is equal to 1 semicolon after it
00:00:59
so that there is no error message then
00:01:01
we still have the value integer which is
00:01:03
used relatively often that is from - I
00:01:07
think this was 2 billion or
00:01:08
200 million something like that, let's take
00:01:11
number 1 and set it equal to Z
00:01:14
then there is also long, for example, which is
00:01:16
even longer than the
00:01:18
integer value, so it also needs a pretty
00:01:19
big number Don't
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worry, in most cases,
00:01:22
at least now with Union and
00:01:25
school assignments for programming, I don't
00:01:26
think you'll ever
00:01:28
reach that number anyway. Let's call it number 2
00:01:32
= 3, so these are our
00:01:35
integer
00:01:36
values. It's important even if you have
00:01:39
1.5 here Write down for the program
00:01:42
is a that does not refer to
00:01:46
the decimal numbers or now in the case
00:01:47
that it is an American
00:01:49
programming language which is also
00:01:50
important to say
00:01:52
it is not called 1.5 but
00:01:55
1.5 otherwise always be careful otherwise you can make
00:01:58
a few mistakes Put it into the program
00:01:59
because otherwise it won't work
00:02:01
anymore, so now there are three
00:02:05
floating point pens, they have
00:02:08
a damn large range of values, so
00:02:11
in most
00:02:13
cases you don't have to worry at all. Once
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the
00:02:16
float number is
00:02:19
3 =
00:02:21
4, i.e. 4.9, for example, then we have
00:02:27
double zah
00:02:30
4
00:02:32
1
00:02:35
337.1337 also a nice number and
00:02:38
lastly we have long long double and
00:02:41
that blows up the entire frame in terms of
00:02:42
length. I don't even know how
00:02:44
many zeros it has that's what I want so it
00:02:47
has 49000 or something like that is a nice
00:02:51
number I'll say number 5
00:02:54
equals beautiful, elegant,
00:02:57
long, really great number I found it here ne
00:03:00
m those were now the six data types
00:03:03
for numbers
00:03:04
which you can still say large-sided,
00:03:06
mostly at least for us it was like that
00:03:07
when we have integers we
00:03:10
used the data type in the Uni and when
00:03:12
we have decimal numbers we usually
00:03:14
used double because the
00:03:15
value range e is almost always
00:03:18
enough, you don't need to be afraid, to be
00:03:20
honest, what I
00:03:22
can now say in retrospect is that there is
00:03:24
also an unsigned data value
00:03:27
and the I mean, let's go into the data type
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briefly, so
00:03:34
unign is important,
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it actually just shows that there are
00:03:39
no negative numbers, now an
00:03:41
example, I assume
00:03:44
in number 6 we stopped
00:03:49
exactly, for example 1, so now of course it's not a
00:03:52
negative number but if, for example, now Here
00:03:56
later in the next videos
00:03:59
I'll also talk about arithmetic operations C.
00:04:01
You'll see that, for example, some
00:04:04
arithmetic operations result in a minus number,
00:04:06
but that if you do
00:04:08
n't want to have a minus number in your program,
00:04:10
then maybe it won't
00:04:11
work properly anymore, etc You can
00:04:13
enter that it is simply displaying,
00:04:15
which means it won't be seen as a minus number
00:04:17
at all, at least it will then be calculated as a
00:04:19
positive number. It's
00:04:22
also important to note that there are
00:04:24
only rows for
00:04:26
the whole numbers, which means that it
00:04:29
doesn't work here with the FLI numbers
00:04:32
and lastly there is also
00:04:34
the data type Schar, I just
00:04:36
said that stands for letters, I say
00:04:40
ne e.g. now here SHS SH and then
00:04:43
I now take B for letter or I
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n a letter actually doesn't
00:04:48
matter at all, it's the same and now it's important now you
00:04:52
have to
00:04:53
you these
00:04:55
tips, whatever you call these things,
00:04:57
half a g foot somehow and then
00:05:01
you take the
00:05:04
letter Z, for example, because z you like it that way,
00:05:08
again important don't forget sicolon at the very end
00:05:10
and then we have now
00:05:12
named this one too, something like that
00:05:16
Now you can calculate everything with the numbers later, you
00:05:17
'll
00:05:20
see that in the fourth video. The third video will be
00:05:23
about how you actually
00:05:25
output values ​​on the screen and read them in,
00:05:28
which I also think is a practical thing. I would
00:05:30
say see you in the next video,
00:05:32
bye bye

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