C Programming - Pointers - Discussion

Thanks everyone for making it clear.

First line :*s[]={-------} defines a pointer to an array of those listed colors

Second line: **ptr[]={-----} defines a pointer to an array of colors in reverse order as defined by s[]

Third line:now pointer 'p' refers to the same address of ptr pointing to, now ptr is starting with address of "pink" so p is starting at "p" in pink

Fourth line:increasing the address of pointer 'p' by 1 that is now pointer 'p' is pointing at "i"

Fifth line" p+1 means to print the first value stored in pointer ptr ie pink, but starting from pointer 'p' so it will print "ink"

Let starting address for black=1000, white=2000, pink=3000, violet=4000
then s will be a array of [1000, 2000, 3000, 4000] and let its starting address to 5000 which will contain 1000, next 5004 which will contain 2000 and so on.

ptr will be array of address stored in s as [5012(s+3= 5000+3*4(size of pointer)), 5008, 5004, 5000] and let its starting address be [6000,6004,6008,6012]
now p = 6000
++p= 6004
**p+1= **6004+1 =*5008+1 = 3000+1 =3001( as it array of characters)
3001=i (in pink).

%s will start printing from i untill null occurs.

*s->'black' 'white' 'pink' 'violet'
s-> 100 101 102 103

*ptr->103 102 101 100
ptr->500 501 502 503


p=ptr=500
++p=501

*(*p)=*(102)->'pink'
printf("%s",**p+1)=ink.

What is the meaning of ***p, **p, **ptr?

Please anyone explain.

1st line of the program makes an array of char pointers(i.e strings in c++), having s[0] = "black" ... etc.

2nd line create in another array having reversed order of strings in array 's'(i.e. the first string in this array is "voilet").

3rd line making **p to point to the same address as **ptr is pointing to.

4th line increases the address of by one to which the **p is pointing to(i.e now **p is pointing to string "pink").

5th line dereferences the next address within the string which was pointing by **p(i.e firstly **p is now poiting to "ink").

And so is the answer.

s is a character pointer
s[0]=black and ptr[0]=violet
s[1]=white ptr[1]=pink
s[2]=pink ptr[2]=white
s[3]=violet ptr[3]=black

here p=ptr means p,ptr represents same address
++p means ++ptr = pink
++p+1 means ink

char **ptr[]=***p;
p=ptr;
sp p containg the address of p , so p contains the initial value address that is s+3;
now ++p;
so p is increase by one .
hence p contains address of s+2 ;
and **p define the value at s+2 ;
which is pink
so in **p+1 is ink.

Can somebody give clear explanation please.

thank u everyone