Created
September 28, 2016 15:12
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| #include <iostream> | |
| using namespace std; | |
| void change(int* x) // essential we made a new pointer and pointed it to the same address as p | |
| { | |
| *x = 20; // this dereferences our pointer so we can change the variable. remember this is pointing to the memory on the heap | |
| } | |
| int main() | |
| { | |
| int* p = new int; // allocated new memory on the heap and gave it a pointer | |
| *p = 10; // the derefereenced pointer is assigned to value 10 | |
| cout << p << " " << *p << "\n"; // this should print out the memory address and the value 10 | |
| change(p); | |
| cout << p << " " << *p << "\n"; | |
| delete p; // this will delete the memory address stored here | |
| system("pause"); // this is so we can read the console window | |
| return 0; | |
| } |
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