string variables are like pointers to the first character of a string i am correct ?

No

Google how to work with string in C Basically, <string.h> header does this

Yep

That's wonderfull, thank you very much for pointing me that out, i was struggling, because static const members can't be initialised in constructors, or if is not static, it will be included in all instances, which is waste of memory...

No

is it comparing memory addresses?

that the part i am a bit confused about

That's wonderfull, thank you very much for pointing me that out, i was struggling, because static const members can't be initialised in constructors, or if is not static, it will be included in all instances, which is waste of memory...

What C++ standrard do you compile with?

is it comparing memory addresses?

Yes

What C++ standrard do you compile with?

I was bound to C+11 for few years, but now I went with C++17

I was bound to C+11 for few years, but now I went with C++17

That's wonderful to hear Then you can change const to constexpr there

Yes

so basically since t starts off pointing to the last character in the string , its memory address is further down the line the s would be , so its memory address is greater , and as t moves down the each character its memory address it points to get closer to s

Code looks ok. what is the problem?

Code looks ok. what is the problem?

i just wanted to have a full understanding on what was going on , but comparing memory addresses makes sense now

That's wonderful to hear Then you can change const to constexpr there

Can constexpr reside inside the class definition, like encapsulated, so that constant will be like local within the class members, but also can be referenced externally as regular class member?

I cannot find the complexity of sqrtl in cppreference? Is there any other link?

so basically since t starts off pointing to the last character in the string , its memory address is further down the line the s would be , so its memory address is greater , and as t moves down the each character its memory address it points to get closer to s

Yes, it seems you got it right

I cannot find the complexity of sqrtl in cppreference? Is there any other link?

https://en.cppreference.com/w/c/numeric/math/sqrt

https://en.cppreference.com/w/c/numeric/math/sqrt

No complexity mentioned here.

Why do you need that?

Why do you need that?

so, as to know the extent to which it can hamper the actual time of execution.

Can constexpr reside inside the class definition, like encapsulated, so that constant will be like local within the class members, but also can be referenced externally as regular class member?

AFAIK only static member variables can constexpr which kinda makes sense

when comparing strings like char somestring[20] = “hello” and char anotherstring[40] = “long” and you do like an while loop like if(somestring > anotherstring) are we comparing if they have the same character or length or something

This is not comparing of string but of pointers to string

Can constexpr reside inside the class definition, like encapsulated, so that constant will be like local within the class members, but also can be referenced externally as regular class member?

I just tested it, it's possible, thank you again

This is not comparing of string but of pointers to string

Pointers to char, you mean

Pointers to char, you mean

exactly , its all makes sense now

I just tested it, it's possible, thank you again

No problem Ask questions here more often 😉

exactly , its all makes sense now

Good

when comparing strings like char somestring[20] = “hello” and char anotherstring[40] = “long” and you do like an while loop like if(somestring > anotherstring) are we comparing if they have the same character or length or something

Actually this operation is correct but useless

Actually this operation is correct but useless

In the context it is ok, isn't it?

Actually this operation is correct but useless

i think the book just put it in there for the sake of better understanding pointer arithmetic

i have a library of over 100 books i think

sounds suspicious

i think the book just put it in there for the sake of better understanding pointer arithmetic

Which book are you talking of?

sounds suspicious

Which book are you talking of?

Head First C

i am just reviewing the first 6 chapters before i finish the second half of the book

next chapter is on data structures and dynamic memory

char *juices[] = {"dragonfruit", "waterberry", "sharonfruit", "uglifruit", "rumberry", "kiwifruit", "mulberry", "strawberry", "blueberry", "blackberry", "starfruit"};

when declaring a pointer like this , what is the point , oppose to just declaring a juice character array ?

char *juices[] = {"dragonfruit", "waterberry", "sharonfruit", "uglifruit", "rumberry", "kiwifruit", "mulberry", "strawberry", "blueberry", "blackberry", "starfruit"};

The array must be const

The array must be const

huh

The array must be const

https://t.me/programminginc/224450

when declaring a pointer like this , what is the point , oppose to just declaring a juice character array ?

I don't understand the question

char *juices[] = {"dragonfruit", "waterberry", "sharonfruit", "uglifruit", "rumberry", "kiwifruit", "mulberry", "strawberry", "blueberry", "blackberry", "starfruit"};

It is array of pointers

i seen arrays declared normally like char somearray[] = {some data}; but i also seen it declared as a point like char *somearray[] = {some data}

i seen arrays declared normally like char somearray[] = {some data}; but i also seen it declared as a point like char *somearray[] = {some data}

char foo[] (array of chars - e.g. single string) char * foo (pointer to char - e.g. single string) char * foo[] (array of pointer to char - e.g. multiple strings)

char foo[] (array of chars - e.g. single string) char * foo (pointer to char - e.g. single string) char * foo[] (array of pointer to char - e.g. multiple strings)

thanks , do you mean single char for char * foo

thanks , do you mean single char for char * foo

char foo is single char

char foo is single char

yea i know ,

thanks , do you mean single char for char * foo

So explain the question

So explain the question

read what he wrote ...

read what he wrote ...

So?

thanks , do you mean single char for char * foo

char * is a pointer to a char, it can be a single char or it can be multiple ones - you can't tell from the type

char * is a pointer to a char, it can be a single char or it can be multiple ones - you can't tell from the type

thank you for the detail explanation

char * is a pointer to a char, it can be a single char or it can be multiple ones - you can't tell from the type

one more question when would you use an array of pointers instead of a standard array

one more question when would you use an array of pointers instead of a standard array

2-dimensional array for example.

2-dimensional array for example.

What do you mean

one more question when would you use an array of pointers instead of a standard array

Array of pointers if the elements in the array are not of the same size, or the objects already exist in non contiguous memory regions

What do you mean

Array of pointers???

2-dimesional array is array of arrays

2-dimesional array is array of arrays

technically my example is a 2-dimensional array since its an array of strings , which a string is an array of characters ?

2-dimesional array is array of arrays

And the name of array - the pointer of it's 1st element l. :)

const char *juices[] = {"dragonfruit", "waterberry", "sharonfruit", "uglifruit", "rumberry", "kiwifruit", "mulberry", "strawberry", "blueberry", "blackberry", "starfruit”}; @I_Interface

const char *juices[] = {"dragonfruit", "waterberry", "sharonfruit", "uglifruit", "rumberry", "kiwifruit", "mulberry", "strawberry", "blueberry", "blackberry", "starfruit”}; @I_Interface

Should be const i think.

Should be const i think.

🙂 yea i know

i fixed it

Array of pointers if the elements in the array are not of the same size, or the objects already exist in non contiguous memory regions

ok i get what you mean

if anybody wants to give it a go ,

isn’t it ‘heey look here’s some task, can you solve it?’

Pointers to char, you mean

Yes

hello, i want to ask about how to know the standard supported by gcc-c++ on my mini linux computer?

hello, i want to ask about how to know the standard supported by gcc-c++ on my mini linux computer?

run g++ --version to see which gcc version is installed, you can see here which feature is supported by which compiler https://en.cppreference.com/w/cpp/compiler_support

when declaring a pointer like this , what is the point , oppose to just declaring a juice character array ?

This is not a pointer, this is array of pointers. And it must be const char *juices[] = {"dragonfruit", "waterberry", "sharonfruit", "uglifruit", "rumberry", "kiwifruit", "mulberry", "strawberry", "blueberry", "blackberry", "starfruit"};

hello, i want to ask about how to know the standard supported by gcc-c++ on my mini linux computer?

Just check GCC version (gcc --version) and look for it in the compatibility table you can find on CPR site (cppreference.com)

Ah olli already has sent it!

thank you

hello guys does any body have mysql download link?

Hi

Anyone help me

I have some confusion

tell buddy

Can someone help me out with time complexity