Pointer Arithmetic
This lesson highlights the different arithmetic operations we can perform on pointers.
We'll cover the following...
Basic Addition and Subtraction
Consider a simple pointer, p, which points to a value of 10. What would happen if we increment it by 1?
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#include <iostream>using namespace std;int main() {int *p = new int(10);cout << "p: " << p << endl;cout << "value of p: " << *p << endl << endl;p = p + 1;cout << "p: " << p << endl;cout << "value of p: " << *p << endl << endl;}
As we can observe, incrementing p actually increments its address. Since it is an integer pointer, the address jumps 4 bytes ahead (the size of an integer is 4 bytes).
The value of p becomes 0 which represents null or an empty ...