编写一个C程序，用char *malloc(unsigned size)函数向系统申请一次内存空间（如size=1000，单位为字节），用首次适应法

addr = (char *)fmalloc(unsigned size) 和

ffree(unsigned size,char * addr)（基本要求）或

循环首次适应法（提高一步）

addr = (char *)lmalloc(unsigned size) 和

lfree(unsigned size,char * addr)

模拟UNIX可变分区内存管理，实现对该内存区的分配和释放管理。

-Write a C program, using char* malloc (unsigned size) function of one application to the system memory space (such as size = 1000, in bytes), with the first adaptation method addr = (char*) fmalloc (unsigned size) and ffree (unsigned size, char* addr) (basic requirements), or loop the first adaptation method (increase step) addr = (char*) lmalloc (unsigned size) and lfree (unsigned size, char* addr) variable partition memory management simulation UNIX to achieve the allocation of the memory area and release management.