realloc c how to use code example

Example 1: c realloc

/*prototype of realloc*/
void *realloc(void *ptr, size_t newsize);

/*use*/
dyn_array = realloc(dyn_array, (dyn_array_size + 1) * sizeof(int));

/*
	adds one more space to dyn_array
    you need stdlib.h for this
*/

Example 2: realloc in c

void *realloc(void *ptr, size_t size)