Technical Interview Questions
In case of a pointer to pointer concept, one pointer refers to the address of another pointer. The pointer to pointer is a chain of pointers. Generally, the pointer contains the address of a variable. The pointer to pointer contains the address of a first pointer. In C, a pointer to a pointer is a … Read more
If a pointer is pointing any memory location, but meanwhile another pointer deletes the memory occupied by the first pointer while the first pointer still points to that memory location, the first pointer will be known as a dangling pointer. This problem is known as a dangling pointer problem. Dangling pointer arises when an object … Read more
A pointer which can access all the 16 segments (whole residence memory) of RAM is known as far pointer. A far pointer is a 32-bit pointer that obtains information outside the memory in a given section. In C, a far pointer is a pointer that can address a larger memory space than a near pointer. … Read more
A pointer that doesn’t refer to any address of value but NULL is known as a NULL pointer. When we assign a ‘0’ value to a pointer of any type, then it becomes a Null pointer. In C, a NULL pointer is a pointer that does not point to any memory location. It is a … Read more
Accessing array elements: Pointers are used in traversing through an array of integers and strings. The string is an array of characters which is terminated by a null character ‘\0’. Dynamic memory allocation: Pointers are used in allocation and deallocation of memory during the execution of a program. Call by Reference: The pointers are used … Read more