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C++ Language > Learn C++ Language > How do I declare and initialize a pointer in C++?
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How do I declare and initialize a pointer in C++?

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Pointers are symbolic representations of addresses. They enable programs to simulate call-by-reference as well as to create and manipulate dynamic data structures. Iterating over elements in arrays or other data structures is one of the main use of pointers. datatype *var_name; int *ptr; // ptr...
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Pointers are symbolic representations of addresses. They enable programs to simulate call-by-reference as well as to create and manipulate dynamic data structures. Iterating over elements in arrays or other data structures is one of the main use of pointers. 

datatype *var_name; 
int *ptr;   // ptr can point to an address which holds int data
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Experienced Computer trainer having worked in IT sector for 20 years.

You need to initialize a pointer by assigning it a valid address. This is normally done via the address-of operator ( & ). The address-of operator ( & ) operates on a variable, and returns the address of the variable. For example, if number is an int variable, &number returns the address...
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You need to initialize a pointer by assigning it a valid address. This is normally done via the address-of operator ( & ). The address-of operator ( & ) operates on a variable, and returns the address of the variable. For example, if number is an int variable, &number returns the address of the variable number .

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