To return an allocated memory back to the free store a delete operator is to be used:#include <iostream>int main(){using namespace std;// Delcare a pointerunsigned short * pPointer;// allocate a memory with a new operator on the free store // and assign a memory address to a pointer named pPointerpPointer = new unsigned short;// assign an integer value to a pointer*pPointer = 31;// de-allocating memory back to the free storedelete pPointer;// Print out a value of pPointercout << *pPointer << endl;return 0;}OUTPUT: 0delete operator frees a memory allocated by a new operator and returns it back to the free store. The declaration of the pointer is still valid so pPointer can be reassigned. The remove operator just removed associated memory address with the pointer.NOTE:It is important to mention that pointers should be always initialized even after delete operator. Not to do so can create so called a stray pointer which can lead to unpredictable results because a stray pointer may still point to an old position in the memory and compiler can use that memory address to store other data. Program can function normally. However, a time bomb to crash the program is set and the time is running. C++
Topic: Pointers
Explain about De-allocating a memory with delete operator ?
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