/*function pointer example in c.*/#include <stdio.h>//function: sum, will return sum of two//integer numbersintaddTwoNumbers(intx,inty) {returnx+y; }intmain() {inta, b, sum;//function pointer declarationint(*ptr_sum)(int,int);//function initialisationptr_sum=&addTwoNumbers; a=10...
Function Pointer Syntax The syntax for declaring a function pointer might seem messy at first, but in most cases it's really quite straight-forward once you understand what's going on. Let's look at a simple example: 1 void (*foo)(int); In this example, foo is a pointer to a fu...
InC programming language, we can have a concept of Pointer to a function known asfunction pointer in C. In this tutorial, we will learn how to declare a function pointer and how to call a function using this pointer. To understand this concept, you should have the basic knowledge ofFuncti...
The above command means you defined a new type with the name point_func (a function pointer that takes two int arguments and returns an integer, i.e., int (*) (int, int)). Now you can use this new name for pointers declaration. Let’s look at the following programming example: #in...
How Do I Do It in C++? (C++11 and later) As afunction pointer type alias: usingtypeName=returnType(*)(parameterTypes); (example code) As afunction type alias: usingtypeName=returnType(parameterTypes); (example code) This site is not intended to be an exhaustive list of all possible use...
How Do I Do It in C++? (C++11 and later) As afunction pointer type alias: usingtypeName=returnType(*)(parameterTypes); (example code) As afunction type alias: usingtypeName=returnType(parameterTypes); (example code) This site is not intended to be an exhaustive list of all possible use...
Application of Function Pointers in C 15 related questions found What is the correct way to declare a pointer? Explanation:int *ptris the correct way to declare a pointer. What is pointer example? A pointer isa variable that stores the address of another variable. Unlike other variables that ...
If you really want to use function pointers in C++, you can still use the same C-style syntax shown above or the type aliases below. As a function pointer type alias: using typeName = returnType (*)(parameterTypes); (example code) As a function type alias: using typeName = returnType...
void pointer_to_upper(std::string* str) { if (str) to_upper(*str); } void vector_to_upper(std::vector<std::string>& strs) { for (auto& str : strs) { to_upper(str); } } void map_to_upper(std::map<int, std::string>& strs) { for (auto& pair : strs) { to_upper...
Here, we will learn how to pass a string (character pointer) in a function, where function argument is void pointer.Consider the given example#include <stdio.h> //function prototype void printString(void *ptr); int main() { char *str="Hi, there!"; printString(str); return 0; } /...