函数名: coreleft

功 能: 返回未使用内存的大小

用 法: unsigned coreleft(void);

程序例:

#include <stdio.h>

#include <alloc.h>

int main(void)

{

printf("The difference between the highest allocated block and\");

printf("the top of the heap is: %lu bytes\", (unsigned long) coreleft());

return 0;

}