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C / C++

Question: How will you free the allocated memory ?

Posted by: Bangali Saroj on: 24 Jun, 2017
Meera's Classes
Devi
Shah Naitik
Kiranmai
Ch. Durgarao
Raju Dasar
+ 14 Answers by Expert Tutors
Answer
Using free() function.
Answer by:
Pooja S, Bangalore
Answer
Using Free Function
Answer by:
Swapnil Thakkar, Mumbai
Answer

Answer: Each time when you allocate memory at run time using malloc() or calloc(), the memory get allocated fom heap area. It is necessary to free the memory which is allocated dynamically at run time to avoid memory leaks. The free() function is used to free the memory which is allocated previously using malloc() or calloc().

Syntax: free(mem_ptr);

Here mem_ptr is a pointer to memory allocated using malloc() or calloc().

Example: 

int *p = (int *)malloc(sizeof(int));

free(p);

 

 

Answer by:
Mehraj Shaikh, Mumbai
Answer
Using function free() we free the allocated memory. This is reverse of malloc or calloc and is included in stdlib.h header file.
Answer by:
Krishna, Kolkata
Answer

You can use Free() function.

Answer by:
Sunil, Mumbai
Answer

 

The following four dynamic memory functions can be found in the stdlib.h library:

To allocate space for an array in memory you use calloc()

To allocate a memory block you use malloc()

To reallocate a memory block with specific size you use realloc()

To de-allocate previously allocated memory you use free()

Answer by:
Sumi, Hyderabad
Answer
C free() Dynamically allocated memory created with either calloc() or malloc() doesn't get freed on its own. You must explicitly use free() to release the space.
Answer by:
Ruchi Bansal, Delhi
Answer

Using function

free(pointer to allocated memory)

This is reverse of malloc or calloc and is included in stdlib.h header file

Answer by:
Reena Jaju, Pune
Answer
Free function
Answer by:
Kirthiga .k.s, Bangalore
Answer
using free() function
Answer by:
Abhay Kumar, Kolkata
Answer
If it is static allocation then then we cannot explicitly free the memory. If it is dynamic memory allocation then c language provides free() function to free the memory, the parameter of the function is the starting address of the memory(or block of memory). C++ provides an additional operator 'delete' to free the memory syntax : delete memory_address;
Answer by:
Abin Joseph, Hyderabad
Answer
using free() function.
Answer by:
Rashmi Vishwakarma, Noida
Answer
free function is used to deallocate memory which is allocated using malloc, calloc, etc. delete operator is used to deallocate memory, which is allocated using new operator.
Answer by:
Mahesh, Pune
Answer
By using the function- free()
Answer by:
Swarnali Bhattacharya, Kolkata
Answer
Using free in c and delete in C++ .if ur using dynamic memory.otherwise it's. Otherwise required.
Answer by:
Raju Dasar, Bangalore
Answer
Through dealloc() function
Answer by:
Ch. Durgarao, Hyderabad
Answer
Functions malloc(), calloc(), realloc() are used for dynamic allocation while free() used for deallocation of block allocated to by malloc(), calloc() or realloc().
Answer by:
Kiranmai, Bangalore
Answer
free() function
Answer by:
Shah Naitik, Vadodara
Answer
when you specify free() the memory allocated will automatically de-allocated.
Answer by:
Devi, Chennai
Answer
To allocate space for an array in memory you use calloc() To allocate a memory block you use malloc() To reallocate a memory block with specific size you use realloc() To de-allocate previously allocated memory you use free()
Answer by:
Meera's Classes, Mumbai

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