Free() Function in C++
How is free() used in C++?
Explanation
Free() Function is used to free the memory pointed by the pointer back to the memory heap. This function should be called on a pointer that was used either with "calloc()" or "malloc()", otherwise the function will destroy the memory management making a system to crash.
void *free(void *ptr);
In the above example the first the memory is allocated using the "malloc()" then using the free() function the memory is freed.
Syntax:
void *free(void *ptr);
Example :
| #include <stdlib.h> #include <stdio.h> int main () { int * ptr; ptr = (int*) malloc (80*sizeof(int)); free(ptr); return(0); } |
In the above example the first the memory is allocated using the "malloc()" then using the free() function the memory is freed.
