free
Syntax:
#include <cstdlib> void free( void* ptr );
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:
typedef struct data_type {
int age;
char name[20];
} data;
data *willy;
willy = (data*) malloc( sizeof(*willy) );
...
free( willy );
Related topics: