CODEWITHSUNDEEP
c
jingo
jingo

Reputation: 1074

Two asterisks before variable name

While digging in some C source code I found that fragment of code

char  **words

I know that single asterisk before variable name "points" to pointer, but what is the purpose of those two asterisks ?

Upvotes: 14

Views: 10223

Answers (3)

pmg
pmg

Reputation: 108978

// your imagination is the limit
char letter;
char *word;        // sequence of letters
char **sentence;   // sequence of words
char ***paragraph; // sequence of sentences
char ****book;     // sequence of paragraphs
char *****library; // sequence of books

The data structure is probably not the best to represent the concept: this is just an illustration.

Upvotes: 7

Gouse Shaik
Gouse Shaik

Reputation: 338

simple dude! it points to the pointer thats it

**a points to the pointer *a thats it.

For more information you can google it

Upvotes: -2

Jan S
Jan S

Reputation: 1837

It is a pointer to a pointer.

It is used primarily when you use an array of character strings.

For example: you have char sample[5][5]; - this can store 5 strings of length 4;

If you need to pass it to a function, func(sample);

And the function definition of such a function would be func(char **temp);

Upvotes: 11

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