C++ LANGUAGE DYNAMIC MEMORY

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C++ LANGUAGE DYNAMIC MEMORY

DYNAMIC MEMORY 

A good understanding of how dynamic memory really works in 
C++ is essential to becoming a good C++ programmer. 
Memory in your C++ program is divided into two parts: 


• The stack: All variables declared inside the 
function will take up memory from the stack. 

• The heap: This is unused memory of the program and 
can be used to allocate the memory dynamically when program runs. 

Many times, you are not aware in advance how much memory you 
will need to store particular information in a defined 
variable and the size of required memory can be determined at run time. 

You can allocate memory at run time within the heap for 
the variable of a given type using a special operator 
in C++ which returns the address of the space allocated. 
This operator is called new operator. 

If you are not in need of dynamically allocated 
memory anymore, you can use delete operator, which 
de-allocates memory that was previously allocated 
by new operator.