Can we store address pointer variable?

A Simple Example of Pointers in C Important point to note is: The data type of pointer and the variable must match, an int pointer can hold the address of int variable, similarly a pointer declared with float data type can hold the address of a float variable.

Which type of variable can store the address of any variable?

pointer
As just seen, a variable which stores the address of another variable is called a pointer. Pointers are said to “point to” the variable whose address they store.

Can we store integer in pointer?

Note: The pointer is absolutely never used to access a memory location, just to store an int.

Which operator is used to get value at address stored in a pointer variable?

To access address of a variable to a pointer, we use the unary operator & (ampersand) that returns the address of that variable.

How do you store address pointers?

Storing the value of the pointer (i.e. the memory location of some variable) in a string can be done much like you’ve used printf: char buf[128]; void *s = malloc (size); sprintf(buf, “\%p\n”,s);

How do I store pointer to pointer?

We already know that a pointer points to a location in memory and thus used to store the address of variables. So, when we define a pointer to pointer. The first pointer is used to store the address of the variable. And the second pointer is used to store the address of the first pointer.

How do you store integers in char pointer?

We can actually store the value of an int to a char pointer….For example, if an int is 4 bytes (big assumption, but often true), and then you write:

1. #include
2. main()
3. {
4. int i = 100;
5. int *p = (int *) 100;
6. printf(“sizeof(int)=\%d sizeof(int *)=\%d\n”,sizeof(i),sizeof(p));
7. printf(“i=\%d p=\%d\n”, i, (int) p);
8. i+=5;

Why can a pointer of one data type not be used to point to a variable of another data type?

All pointers can’t have same data type because of size differences of various data types. An internal mapping is done by the compiler which makes the pointer of a variable compatible to store the address of that particular variable.