Declaring a pointer<\/strong><\/h2>\n

The pointer in c language can be declared using * (asterisk symbol). It is also known as indirection pointer used to dereference a pointer.<\/span><\/p>\n

<\/div>

int *a; \/\/pointer to int  char *c;\/\/pointer to char  <\/code><\/pre> <\/div>\n
Pointer Example:<\/h3>\n
An example of using pointers to print the address and value is given below.<\/p>\n
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<\/p>\n
Pointer to array<\/strong><\/h3>\n
 
 <\/div> 
int arr[10];\u00a0\u00a0int *p[10]=&arr;\u00a0<\/code><\/pre> <\/div>\n
Pointer to a function<\/strong><\/h3>\n
 
 <\/div> 
void show\u00a0(int);\u00a0\u00a0void(*p)(int)\u00a0=\u00a0&display;\u00a0<\/code><\/pre> <\/div>\n
\u00a0<\/strong>Pointer to Structure<\/strong><\/h3>\n
 
 <\/div> 
struct\u00a0st\u00a0{\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0i;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0float\u00a0f;\u00a0\u00a0}ref;\u00a0\u00a0struct\u00a0st\u00a0*p\u00a0=\u00a0&ref;\u00a0\u00a0<\/code><\/pre> <\/div>\n
<\/p>\n
Advantages of Pointer<\/h2>\n
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Pointer reduces the code and improves the performance.<\/li>\n
It is used to retrieving strings, trees, etc., and used with arrays, structures, and functions.<\/li>\n
We can return multiple values from a function using the pointer.<\/li>\n
It makes you able to access any memory location in the computer’s memory.<\/li>\n<\/ul>\n
Usage of pointer<\/h2>\n
There are many applications of pointers in c language.<\/p>\n
Dynamic memory allocation<\/strong><\/p>\n
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In C language, we can dynamically allocate memory using malloc() and calloc() functions where the pointer is used.<\/li>\n<\/ul>\n
Arrays, Functions, and Structures<\/strong><\/p>\n
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Pointers in c language are widely used in arrays, functions, and structures.<\/li>\n
It reduces the code and improves the performance.<\/li>\n<\/ul>\n
\n","protected":false},"excerpt":{"rendered":"
For storing the address of another variable pointers can be used. Variables of type int,char, array, function or any other pointer can be of type pointer. Architecture of a pointer determines the size of the pointer. Size of the pointer depends on the architecture. In 32 bit the size of the pointer is 2 byte. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[1716],"tags":[18733,18413,18416,18732,1819,18731,18730,18729,18728],"class_list":["post-4903","post","type-post","status-publish","format-standard","hentry","category-c","tag-advantage-of-pointers-in-c","tag-c-pointers","tag-c-pointers-with-examples","tag-pointer-arithmetic-in-c","tag-pointers-in-c","tag-pointers-in-c-and-c","tag-what-are-pointers-in-c","tag-what-is-pointer","tag-what-is-pointer-in-c-programming"],"yoast_head":"\n