C++ pointers explained easy 👈

C++ pointers tutorial example explained

#C++ #pointers

[BroCodez]

#include <iostream>

int main() {

// pointers = variable that stores a memory address of another variable
// sometimes it's easier to work with an address

// & address-of operator
// * dereference operator

std::string name = "Bro";
int age = 21;
std::string freePizzas[5] = {"pizza1", "pizza2", "pizza3", "pizza4", "pizza5"};

std::string *pName = &name;
int *pAge = &age;
std::string *pFreePizzas = freePizzas;

std::cout << *pName << '\n';
std::cout << *pAge << '\n';
std::cout << *pFreePizzas << '\n';

return 0;
}

[tarsow]

if its not clear to everyone, arrays are just pointers, which point to the first element in the list, for example: arr[i] is the same as *(arr + i), its also one of the reasons you can write i[arr] in C++ and it will give the same output as arr[i], there is also other things that are possible with arrays/pointers:

#include <iostream>

int main(int argc, char *argv[])
{
int size = 3;
int array[size] = {10, 5, 3, 1, -2, -4, -7};

std::cout <<
std::cout << "Bytes array: " << sizeof(array) << '\n'; // Bytes array: 12
std::cout << "Bytes first element: " << sizeof(*array)<< '\n'; // Bytes first element: 4
std::cout << "Elements in array: " << << '\n'; // Elements in array: 3
std::cout <<



std::cout << *array << '\n'; // output: 10
std::cout << *(array + 2) << '\n'; // output: 3
std::cout << array[5] << '\n'; // output: -4
std::cout << array['a'] << '\n'; // output: 0, because 'a' = 97, and array[97] is not declared so it could be any number
array['a'] = 13; // the compiler doesnt give an error, but this could break everything, because its outside the array
std::cout << array['a'] << '\n'; // output: 13

std::cout <<

char str1[13] = "Hello, World"; // 12 chacters + 1 NULL character
std::string str2 = "Hello, World";

std::cout << str1 << '\n'; // output: H
std::cout << str2 << '\n'; // output: H

std::cout << sizeof(str1) << '\n'; // output: 13
std::cout << sizeof(str2) << '\n'; // output: 24
}


Obs: (in C strings are also just pointers, but in C++ they are a class)

[Pranav-nxcm]

int diddy = 1000;
int *pDiddy = &diddy;

[Leon-rw]

Bro has the best videos ngel. W bro❤❤👍

[abdullahsaid-lhhv]

bro you are so amazing you solved my biggest problem
of pointers love U😘😘😘😘😘😘😘😘

[wlsedlacek]

int pointer = 100;
int *pPointer = &pointer

[shreedhoni]

If I want to locate the pizza3 in the array, how should I use my pointer?

[HunaBopa]

assignment: #include <iostream>

int main()
{
double gpa[] = {2.5, 3.3, 4.3, 5.0, 4.05};
double *pGPA = gpa;
for (int i = 0; i < 5; i ++)
{
std::cout << pGPA[i] << "\n";
}

return 0;
}
What's my GPA? A, A+, or F?

[tavares._art]

int main{
std:: string = Bruh;
std:: string = *pBruh = &Bruh;

std::cout << *pBruh << '\n';
}

[Yousif_Maksabo]

#include <iostream>

int main() {

double temp = 44.2;
double *pTemp = &temp;
std::cout << *pTemp;
return 0;
}

[code-charm-linux]

#include <iostream>

int main()
{
char grades[5] = {'A', 'B', 'C', 'D', 'F'};
char *pGrades = grades;

std::cout << "The grades are:";
for(int i = 0; i < i++)
{
std::cout << *(pGrades+i);
}
return 0;
}

[MooseShower]

Thank you! It looks like I just kept forgetting the & which is why my code never worked for my homework

[Mellows.]

why does the output to your freepizzas array and the pointer to said array differs when arrays are already pointers?
i tried it myself and for me it outputs the same thing

[grimquokka]

why don't you use namespace std : (

[dghuvcg]

int pizza =15;
int *pPizza=&pizza;
cout<<&pizza;

[HunaBopa]

Bro, why don't you show yourself on your video tutorials ? I think it would be more interactive for your pupils or fans to engage learning.

[TomášHulina]

int main() {

std::string name = "Marcus";
std::string *pName = &name;

std::cout << *pName << '\n';

int age = 29;
int *pAge = &age;
std::cout << *pAge << '\n';

std::string countries[7] = {"India", "China", "Palestine", "Israel", "Japan", "USA", "Iraq"};
std::string* pCon = countries;
//std::cout << *pCon << '\n';
std::cout <<
std::cout << "Countries:\n";
std::cout <<
int size = sizeof(countries) / sizeof(countries[0]);

for (int i = 0; i < size; i++)
{
std::cout << *(pCon + i) << '\n';
}

return 0;
}

[heavyymetal]

int main(){


string favouriteGames[5] = {"Overwatch 1", "Terraria", "Rocket League", "Minecraft", "Overwatch 2"};
string *pFavouriteGames = favouriteGames;
cout << *pFavouriteGames << "\n";


}