[root@wangl mem]# ./w2

sbrk:80499d4--8049a44	//第一次循環：由于是空連 所以向系統申請開辟空間
mallod 0,80499f4	//第一次循環 得到的空間地址（跳過首部）
base:80499cc,base.nest:80499d4,base.next.next:80499cc,free:80499cc
block 1,size=0It is a searched free block!	//由一個空鏈 開辟出一個空間

sbrk:8049a44--8049ab4	//
mallod 1,8049a64
base:80499cc,base.nest:80499d4,base.next.next:8049a44,free:80499d4

sbrk:8049ab4--8049b24
mallod 2,8049ad4
base:80499cc,base.nest:80499d4,base.next.next:8049a44,free:8049a44
block 1,size=0It is a searched free block!

sbrk:8049b24--8049b94
mallod 3,8049b44
base:80499cc,base.nest:80499d4,base.next.next:8049a44,free:8049ab4
block 1,size=0It is a searched free block!
block 2,size=3It is a searched free block!

sbrk:8049b94--8049c04
mallod 4,8049bb4
base:80499cc,base.nest:80499d4,base.next.next:8049a44,free:8049b24
block 1,size=0It is a searched free block!
block 2,size=3It is a searched free block!
block 3,size=3It is a searched free block!

free 4
base:80499cc,base.nest:80499d4,base.next.next:8049a44,free:8049b94
block 1,size=0It is a searched free block!
block 2,size=3It is a searched free block!
block 3,size=3It is a searched free block!
block 4,size=3It is a searched free block!

free 3
base:80499cc,base.nest:80499d4,base.next.next:8049a44,free:8049b24
block 1,size=0It is a searched free block!
block 2,size=3It is a searched free block!
block 3,size=3It is a searched free block!

free 2
base:80499cc,base.nest:80499d4,base.next.next:8049a44,free:8049ab4
block 1,size=0It is a searched free block!
block 2,size=3It is a searched free block!

free 1
base:80499cc,base.nest:80499d4,base.next.next:8049a44,free:8049a44
block 1,size=0It is a searched free block!

free 0
base:80499cc,base.nest:80499d4,base.next.next:80499cc,free:80499d4

[root@wangl mem]#