Final answer:
In C++ programming, you declare a pointer variable using an asterisk (*) before the variable name. The & operator is used to get the address of a variable, while the * operator is used to access the value stored at a memory address.
Step-by-step explanation:
In C++ programming, you declare a pointer variable by using an asterisk (*) before the variable name.
To declare a pointer variable that can store the memory address of a specific data type, you would use the syntax: data_type *variable_name;. For example, to declare a pointer to an integer, you would write int *ptr;
The & operator is used to get the address of a variable. For example, if you have an integer variable called 'x', you can get its memory address by writing &x;. The * operator, on the other hand, is used to access the value stored at a memory address. For example, if you have a pointer to an integer called 'ptr', you can access the value stored at the memory address pointed to by 'ptr' by writing *ptr;