cpp-work/9pointers.cpp at master · Aenansh/cpp-work · GitHub

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#include<iostream>
using namespace std;

int main(){
    //pointers --> pointers are variables or datatypes that tell the address or point to the address of another variable or datatypes
    int a = 3;
    int *b = &a;
    // & is called the address-off operator that tells the address of the datatype
    cout<<"The address of a is "<<&a<<endl;
    cout<<"The address of a is "<<b<<endl;

    // * is called the dereference operator that tells the value of the pointer or the value of the
    //datatype that the pointer is holding (value at)
    cout<<"The value stored at address b is "<<*b<<endl;

    //pointer to pointer
    int **c = &b;
    cout<<"The address of b is "<<&b<<endl;
    cout<<"The address of b is "<<c<<endl;
    cout<<"The value at address c is "<<*c<<endl;
    cout<<"The value at address (value at c) is "<<**c<<endl;
    return 0;
}