└── pointer in C


/pointer in C:
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 1 | #include <stdio.h>
 2 | 
 3 | // dummy structure
 4 | struct str {
 5 | };
 6 | 
 7 | // dummy function
 8 | void func(int a, int b){};
 9 | 
10 | int main()
11 | {
12 |     // dummy variables definitions
13 |     int a = 10;
14 |     char c = 'G';
15 |     struct str x;
16 | 
17 |     // pointer definitions of different types
18 |     int* ptr_int = &a;
19 |     char* ptr_char = &c;
20 |     struct str* ptr_str = &x;
21 |     void (*ptr_func)(int, int) = &func;
22 |     void* ptr_vn = NULL;
23 | 
24 |     // printing sizes
25 |     printf("Size of Integer Pointer  \t:\t%d bytes\n",
26 |            sizeof(ptr_int));
27 |     printf("Size of Character Pointer\t:\t%d bytes\n",
28 |            sizeof(ptr_char));
29 |     printf("Size of Structure Pointer\t:\t%d bytes\n",
30 |            sizeof(ptr_str));
31 |     printf("Size of Function Pointer\t:\t%d bytes\n",
32 |            sizeof(ptr_func));
33 |     printf("Size of NULL Void Pointer\t:\t%d bytes",
34 |            sizeof(ptr_vn));
35 | 
36 |     return 0;
37 | }
38 | 


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