题目是：
1、    编写程序实现下面的算法：
if
then
lowerCount+1;
else
if(ch≥’A’) and (ch≤’Z’)
then
upperCount+1
else
otherCount+1;
endif
endif
其中ch调用ReadChar输入，lowerCount, upperCount和otherCount的值用WriteUDecByte显示。

我自己写的怎么都通不过：
.386
.MODEL FLAT,stdcall

INCLUDE io.h
include include\io32.inc
INCLUDElib lib\kernel32.lib

ExitProcess PROTO NEAR32 stdcall,dwExitCode:DWORD

cr EQU 0dh
Lf EQU 0ah

.STACK 4096

.DATA
prompt1 BYTE "Please enter the ch:",0
lowerCount DWORD ?
upperCount DWORD ?
otherCount DWORD ?
char1 BYTE 5 DUP (?)

.CODE
_start:
      mov lowerCount,0
      mov upperCount,0
      mov otherCount,0
      output prompt1
ifpos:ReadChar char1
      cmp char1,61h
      jl thenpos
      cmp char1,7Ah
      jg thenpos
      add lowerCount,1
      jmp endifpos
thenpos:cmp char1,41h
       jl elseifpos
       cmp char1,5Ah
       jg elseifpos
       add upperCount,1
       jmp endifpos
elseifpos:add otherCount,1
endifpos:
       WriteUDecDword lowerCount
       WriteUDecDword upperCount
       WriteUDecDword otherCount

       INVOKE ExitProcess,0

PUBLIC _start
END _start

拜托高手帮帮忙（注明哪错了，什么原因）

if (ch≥’a’) and (ch≤’z’) then
    lowerCount+1;
else
    if (ch≥’A’) and (ch≤’Z’) then
        upperCount+1
    else
        otherCount+1;
    endif
endif

题目是这样？

楼主用的什么开发包？至少那个io头让我看下呗，不然怎么知道原型，还有那个链接库
到底是编译错，还是链接错？

恩，是这样的

我们用的masm32，刚学不久，不知道用那些头文件，郁闷啊~~~~~连那个readchar是什么怎么用都不知道

我在实验室改成这样的了
.386
.MODEL FLAT,stdcall

include include\io32.inc

ExitProcess PROTO NEAR32 stdcall,dwExitCode:DWORD

cr EQU 0dh
Lf EQU 0ah

.STACK 4096

.DATA
lowerCount DWORD ?
upperCount DWORD ?
otherCount DWORD ?
char1 BYTE 5 DUP (?)

.CODE
start:
      mov lowerCount,0
      mov upperCount,0
      mov otherCount,0
ifpos:ReadChar char1
      cmp char1,61h
      jl thenpos
      cmp char1,7Ah
      jg thenpos
      inc lowerCount
      jmp endifpos
thenpos:cmp char1,41h
       jl elseifpos
       cmp char1,5Ah
       jg elseifpos
       inc upperCount
       jmp endifpos
elseifpos:inc otherCount
endifpos:
       WriteUDecDword lowerCount
       WriteUDecDword upperCount
       WriteUDecDword otherCount

       INVOKE ExitProcess,0

PUBLIC start
END start


第一次编译运行都过了，还可以运行成功。可是第二次再编译就会显示
LINK:LNK6004:41.exe not found or not built by the last incrementental link;performing full link

我搜了一下说这个错误的意思是内存不够，我删了很多东西后，还是如此，好奇怪