CPP

C++ void pointer

void *ptr;    // ptr is declared as Void pointer

char c;
int i;
float f;

ptr = &c;  // ptr has address of character data
ptr = &i;  // ptr has address of integer data
ptr = &f;  // ptr has address of float data

c++ program for void pointers

#include<iostream>
using namespace std;
void print(void* ptr, char type) {
	switch (type)
	{
	case'i': {
		cout << *((int*)ptr) << endl;
	}break;
	case'c': {
		cout << *((char*)ptr) << endl;
	}break;
	}
}
int main() {
							/*void pointers can hold the
							values of other variable like char, int, foat
							limitation: Is that u can not
							directly dereference a void pointer*/
	int num = 5;
	char let = 'b';
	print(&num, 'i');
	print(&let, 'c');

	return 0;
}

void pointer c++

#include <iostream>

using namespace std;

int main(){
    int n = 5;
    char letter = 'a';
    void* ptr = &n;
    void* ptr2 = &letter;
    cout << *(int*) ptr << endl;
    cout << *(char*) ptr2 << endl;
}