

C++ Pointer
Pointer is a variable in C++ that holds the address of another variable. They have data type just like variables, for example an integer type pointer can hold the address of an integer variable and an character type pointer can hold the address of char variable.C++ pointer syntax
data_type *pointer_name;
C++ Pointer example
#include <iostream>
#include <string>
using namespace std;
int main() {
string fruit = "Banana";
cout << fruit << "\n";
cout << &fruit << "\n";
return 0;
}
Output
Banana
0x7ffff55a4960
0x7ffff55a4960
Why C++ pointers are important?
Pointers are very important, because it will allows us to access addresses and manipulate their contents. Pointers are the most complex and difficult feature in C/C++ language. If pointers are used in a correct way it will improve the efficiency and performance of the application.Initializing null pointers
We can initialize a pointer to 0 or NULL, which is pointing to nothing. Null pointer points to empty location in memory.Example
int * nullPtr = 0; // Initialize the pointer to point to nothing
int * nullPtr = NULL; // Also declare a NULL pointer points to nothing
Conclusion
In this page (written and validated by A. Gawali) you learned about C++ Pointer . What's Next? If you are interested in completing Cpp tutorial, your next topic will be learning about: Cpp OOP.
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