=====free=====
Syntax:

<code>
    #include <cstdlib>
    void free( void* ptr );
</code>
The free() function deallocates the space pointed to by ptr, freeing it up for
future use. ptr must have been used in a previous call to malloc(), calloc(),
or realloc(). An example:

<code>
     typedef struct data_type {
       int age;
       char name[20];
     } data;

     data *willy;
     willy = (data*) malloc( sizeof(*willy) );
     ...
     free( willy ); //lame joke
</code>

Related Topics: [[calloc]], [[keywords/delete]], [[malloc]], [[keywords/new]], [[realloc]]