汇编语言的简单入门--Loop and output,input

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程序的目的：将13个随机数[0-100）存储在数组里面，翻转，输出。

TITLE Write a program

INCLUDE Irvine32.inc.data

ARRAY_SIZE = 13RAND_MAX = 100HALF_ARRAY_SIZE = ARRAY_SIZE/2rands DWORD ARRAY_SIZE dup(0)

.codemain PROC

mov esi,offset rands ;address to the randsmov ecx,lengthof rands ;calculate the size of arrayL1: mov eax,RAND_MAX ;for random the maxinum number call RandomRange ;call this function mov [esi],eax ;set the element that is save in EAX to [esi] add esi,TYPE rands ;point to next element loop L1 mov esi,offset rands ;address to the randsmov ecx,lengthof rands ;calculate the size of array

L2: mov eax,[esi] ;put the [esi] to eax for outputing call writeint mov eax,' ' ;output the space call writechar add esi,TYPE rands ;point to next pointer

loop L2 call crlf

mov esi,offset randsmov ecx,HALF_ARRAY_SIZEmov eax,48L3: mov ebx,[esi] ;put the first element to ebx mov ebp,[esi + eax] ;put the last element to ebp mov [esi + eax],ebx ;exchange the element mov [esi],ebp sub eax,8 ;for changeing the pointer add esi,TYPE rands loop L3

mov esi,offset randsmov ecx,ARRAY_SIZE ;for outputing ;L4: mov eax,[esi] call writeint mov eax,' ' call writechar add esi,TYPE rands loop L4 call crlf call waitmsg

exitmain ENDPEND main