Pointers are used in C++ program to access the memory and manipulate the address. Address in C++. To understand pointers, you should first know how data is. We know that a pointer is a derived data type that refers to another data variable by storing the variable memory address rather than data. a pointer variable define. Pointers store address of variables or a memory location. // General syntax datatype *var_name; // An example pointer "ptr" that holds // address of an integer.Having bought a subscription, you can download this or other directories on our website. To download the file, click on the button below.