Can we assign value to pointer variable in C?

You need to create an int variable somewhere in memory for the int * variable to point at. The key is you cannot use a pointer until you know it is assigned to an address that you yourself have managed, either by pointing it at another variable you created or to the result of a malloc call.

How do you assign a value to a pointer variable?

You need to initialize a pointer by assigning it a valid address. This is normally done via the address-of operator (&). The address-of operator (&) operates on a variable, and returns the address of the variable. For example, if number is an int variable, &number returns the address of the variable number.

How do you store the value of a pointer?

If you need a pointer to store the address of integer variable then the data type of the pointer should be int. Same case is with the other data types. By using * operator we can access the value of a variable through a pointer. *p would give us the value of the variable a.

Can we assign a pointer variable to another pointer variable?

We may think of setting a pointer variable to point to another variable as a two-step process: first we generate a pointer to that other variable, then we assign this new pointer to the pointer variable.

Can we assign a value directly to a pointer?

You can assign 0 into a pointer: ptr = 0; The null pointer is the only integer literal that may be assigned to a pointer.

How do you send a pointer to a function?

C programming allows passing a pointer to a function. To do so, simply declare the function parameter as a pointer type.

Which operator is used to declare pointer variable?

Initialize a pointer

How do you declare a pointer in C?

The general syntax of pointer declaration is,

1. datatype *pointer_name;
2. int a = 10; int *ptr; //pointer declaration ptr = &a //pointer initialization.
3. float a; int *ptr = &a // ERROR, type mismatch.
4. int *ptr = NULL;