indirection requires pointer operand in c

INDIRECTION REQUIRES POINTER OPERAND IN C UPDATE

In the image Pointer1, Pointer2 is pointing to a valid memory object but Pointer3 is pointing to a memory object that has been already deallocated. Let’s see the below image for a better understanding. In simple words, we can say that a dangling pointer is a pointer that does not point to a valid object of the appropriate type and it can be the cause of the undefined behavior. When the user tries to dereference the daggling pointers then it shows the undefined behavior and can be the cause of the segmentation fault. It creates a problem because the pointer is still pointing to the memory that is not available. Generally, daggling pointers arise when the referencing object is deleted or deallocated, without changing the value of the pointers. Q) What is dangling pointer in C? Answer: A void pointer declaration is similar to the normal pointer, but the difference is that instead of data types we use the void keyword. According to the C standard, the pointer to void shall have the same representation and alignment requirements as a pointer to a character type. It can store the address of any type of object and it can be type-casted to any type. Q) What are void or Generic pointers in C? Answer:Ī void pointer is a generic pointer, it has no associated data type. Note: Generally, compilers warn about the wild pointer. In other words, we can say every pointer in programming languages that are not initialized either by the compiler or programmer begins as a wild pointer. The uninitialized pointer’s behavior is undefined because it may point to some arbitrary location that can be the cause of the program crash, that’s the reason it is called a wild pointer. Let’s see the below-mentioned example to understand the declaration of a pointer.Ī pointer that is not initialized properly before its first use is known as the wild pointer. Every pointer has the data types (pre-defined or user-defined) and names followed by an asterisk (*). The Declaration of a pointer is very important because at the time of declaration you define the capability of the pointer. When we have used a pointer to store the address in the memory than using the dereferencing techniques we can also get the value from the address which is stored by the pointer. In other words, we can say, a pointer is used to reference a location in the memory. It will be helpful for others.Ī pointer is similar to a variable but the difference is that pointers store the address of a location in memory and the variable stores the value.

INDIRECTION REQUIRES POINTER OPERAND IN C UPDATE

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If you want to update this pointer interview questions list or have any other important questions related to pointers in C/C++, please write in the comment box. I hope these C pointer interview questions with the answer will be helpful.

Here I have tried to create a collection of “pointer interview questions with answers in C/C++ ” that might ask by your interviewer. If you are looking for “Pointer Interview Questions in C/C++” or “advanced questions on pointers in C/C++, then you are at the right place. This article is mainly focused on the most repeatedly asked and the latest updated Pointer Interview Questions in C that are appearing in most of the C/C++ interviews.

Indirection requires pointer operand in c