void Pointer in C - GeeksforGeeks (2025)

Last Updated : 11 Oct, 2024

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void Pointer in C A void pointer is a pointer that has no associated data type with it. A void pointer can hold an address of any type and can be typecasted to any type. Example of Void Pointer in C[GFGTABS] C // C Program to demonstrate that a void pointer // can hold the address of any type-castable type #include 3 min read
void Pointer in C++ In C++, a void pointer is a pointer that is declared using the 'void' keyword (void*). It is different from regular pointers it is used to point to data of no specified data type. It can point to any type of data so it is also called a "Generic Pointer". Syntax of Void Pointer in C++void* ptr_name; 7 min read
C File Pointer A file pointer is a variable that is used to refer to an opened file in a C program. The file pointer is actually a structure that stores the file data such as the file name, its location, mode, and the current position in the file. It is used in almost all the file operations in C such as opening, 3 min read
C Pointers A pointer is a variable that stores the memory address of another variable. Instead of holding a direct value, it holds the address where the value is stored in memory. There are 2 important operators that we will use in pointers concepts i.e. Dereferencing operator(*) used to declare pointer variab 10 min read
C++ Pointers Pointers are symbolic representations of addresses. They enable programs to simulate call-by-reference as well as to create and manipulate dynamic data structures. Iterating over elements in arrays or other data structures is one of the main use of pointers. The address of the variable you're workin 9 min read
printf in C In C language, printf() function is used to print formatted output to the standard output stdout (which is generally the console screen). The printf function is the most used output function in C and it allows formatting the output in many ways. Example: [GFGTABS] C #include <stdio.h> int main 6 min read
Function Pointer in C In C, a function pointer is a type of pointer that stores the address of a function, allowing functions to be passed as arguments and invoked dynamically. It is useful in techniques such as callback functions, event-driven programs, and polymorphism (a concept where a function or operator behaves di 6 min read
Function Pointer in C++ Prerequisites: Pointers in C++Function in C++ Pointers are symbolic representations of addresses. They enable programs to simulate call-by-reference as well as to create and manipulate dynamic data structures. Iterating over elements in arrays or other data structures is one of the main use of point 4 min read
snprintf() in C In C, snprintf() function is a standard library function that is used to print the specified string till a specified length in the specified format. It is defined in the <stdio.h> header file. In this article, we will learn about snprintf() function in C and how to use it in our program. Synta 3 min read
Dangling, Void , Null and Wild Pointers in C In C programming pointers are used to manipulate memory addresses, to store the address of some variable or memory location. But certain situations and characteristics related to pointers become challenging in terms of memory safety and program behavior these include Dangling (when pointing to deall 6 min read