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F:\bdttdb>set str2= 12345 F:\bdttdb>echo %str2% 12345 F:\bdttdb>set str3=-%str2% F:\bdttdb>echo %str3% - 12345 如何将str3设置成-12345????

C:\test>set str3=%str3: =% C:\test>echo %str3% -12345

set /?

Environment variable substitution has been enhanced as follows: %PATH:str1=str2% would expand the PATH environment variable, substituting each occurrence of "str1" in the expanded result with "str2". "str2" can be the empty string to effectively delete all occurrences of "str1" from the expanded output. "str1" can begin with an asterisk, in which case it will match everything from the beginning of the expanded output to the first

set /a set3-=str2

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set /a运算会自动将数字型字符串转成数字，没想到字符串前面含空格也能转换 看到楼上的长见识了

set /a str3=~str2+1

首先,感谢大家!特别是"HAT" 但是"zw19750516"的set /a str=-%str%,我试验了,在我这个例子中好象不行,报"运算符不存在"??? 原来,我也在BAT中使用过,不知道这次为什么??? jgh.txt 15600 15601 15602 15604 15605 15606 15607 15608 15609 15610 15611 15612 15613 15615 15616 15617 text.txt (建议用UE打开!!!) ┃ ┃ ┃ ┃ ┃ ┃ 1┃ 10206┃ ┃ ┃ ┃小计┃ 1┃ 借 ┃ 7,200.00┃ ┃ 1┃ 15600┃ ┃ ┃ ┃ 2┃ 15600┃ ┃ ┃ ┃小计┃ 2┃ 贷 ┃ 50,000.00┃ ┃ 1┃ 15601┃ ┃ ┃ ┃ 2┃ 15601┃ ┃ ┃ ┃ 3┃ 15601┃ ┃ ┃ ┃ 4┃ 15601┃ ┃ ┃ ┃ 5┃ 15601┃ ┃ ┃ ┃ 6┃ 15601┃ ┃ ┃ ┃小计┃ 6┃ 借 ┃ 26,850.00┃ ┃ 1┃ 15604┃ ┃ ┃ ┃ 2┃ 15604┃ ┃ ┃ ┃ 3┃ 15604┃ ┃ ┃ ┃ 4┃ 15604┃ ┃ ┃ ┃ 5┃ 15604┃ ┃ ┃ ┃小计┃ 5┃ 借 ┃ 500.00┃ ┃ 1┃ 15605┃ ┃ ┃ ┃ 2┃ 15605┃ ┃ ┃ ┃ 3┃ 15605┃ ┃ ┃ ┃ 4┃ 15605┃ ┃ ┃ ┃ 5┃ 15605┃ ┃ ┃ ┃小计┃ 5┃ 借 ┃ 47,377.33┃ ┃ 1┃ 15606┃ ┃ ┃ ┃ 2┃ 15606┃ ┃ ┃ ┃ 3┃ 15606┃ ┃ ┃ ┃小计┃ 3┃ 借 ┃ 3,320.00┃ ┃ 1┃ 15607┃ ┃ ┃ ┃ 2┃ 15607┃ ┃ ┃ ┃ 3┃ 15607┃ ┃ ┃ ┃ 4┃ 15607┃ ┃ ┃ ┃小计┃ 4┃ 借 ┃ 6,100.00┃ ┃ 1┃ 15608┃ ┃ ┃ ┃ 2┃ 15608┃ ┃ ┃ ┃ 3┃ 15608┃ ┃ ┃ ┃ 4┃ 15608┃ ┃ ┃ ┃ 5┃ 15608┃ ┃ ┃ ┃ 6┃ 15608┃ ┃ ┃ ┃ 7┃ 15608┃ ┃ ┃ ┃ 8┃ 15608┃ ┃ ┃ ┃ 9┃ 15608┃ ┃ ┃ ┃ 10┃ 15608┃ ┃ ┃ ┃ 11┃ 15608┃ ┃ ┃ ┃ 12┃ 15608┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ 13┃ 15608┃ ┃ ┃ ┃ 14┃ 15608┃ ┃ ┃ ┃ 15┃ 15608┃ ┃ ┃ ┃ 16┃ 15608┃ ┃ ┃ ┃ 17┃ 15608┃ ┃ ┃ ┃ 18┃ 15608┃ ┃ ┃ ┃ 19┃ 15608┃ ┃ ┃ ┃ 20┃ 15608┃ ┃ ┃ ┃ 21┃ 15608┃ ┃ ┃ ┃ 22┃ 15608┃ ┃ ┃ ┃小计┃ 22┃ 贷 ┃ 237,719.00┃ ┃ 1┃ 15609┃ ┃ ┃ ┃ 2┃ 15609┃ ┃ ┃ ┃ 3┃ 15609┃ ┃ ┃ ┃ 4┃ 15609┃ ┃ ┃ ┃ 5┃ 15609┃ ┃ ┃ ┃ 6┃ 15609┃ ┃ ┃ ┃ 7┃ 15609┃ ┃ ┃ ┃ 8┃ 15609┃ ┃ ┃ ┃小计┃ 8┃ 贷 ┃ 9,860.00┃ ┃ 1┃ 15610┃ ┃ ┃ ┃ 2┃ 15610┃ ┃ ┃ ┃ 3┃ 15610┃ ┃ ┃ ┃ 4┃ 15610┃ ┃ ┃ ┃小计┃ 4┃ 借 ┃ 79,300.00┃ ┃ 1┃ 15611┃ ┃ ┃ ┃ 2┃ 15611┃ ┃ ┃ ┃ 3┃ 15611┃ ┃ ┃ ┃小计┃ 3┃ 贷 ┃ 107,562.10┃ ┃ 1┃ 15612┃ ┃ ┃ ┃ 2┃ 15612┃ ┃ ┃ ┃ 3┃ 15612┃ ┃ ┃ ┃ 4┃ 15612┃ ┃ ┃ ┃ 5┃ 15612┃ ┃ ┃ ┃小计┃ 5┃ 贷 ┃ 197,710.00┃ ┃ 1┃ 15613┃ ┃ ┃ ┃ 2┃ 15613┃ ┃ ┃ ┃ 3┃ 15613┃ ┃ ┃ ┃小计┃ 3┃ 贷 ┃ 32,500.00┃ ┃ 1┃ 15615┃ ┃ ┃ ┃ 2┃ 15615┃ ┃ ┃ ┃ 3┃ 15615┃ ┃ ┃ ┃ 4┃ 15615┃ ┃ ┃ ┃ 5┃ 15615┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ 6┃ 15615┃ ┃ ┃ ┃ 7┃ 15615┃ ┃ ┃ ┃ 8┃ 15615┃ ┃ ┃ ┃ 9┃ 15615┃ ┃ ┃ ┃ 10┃ 15615┃ ┃ ┃ ┃ 11┃ 15615┃ ┃ ┃ ┃ 12┃ 15615┃ ┃ ┃ ┃小计┃ 12┃ 贷 ┃ 109,263.00┃ ┃ 1┃ 15616┃ ┃ ┃ ┃ 2┃ 15616┃ ┃ ┃ ┃小计┃ 2┃ 贷 ┃ ┃ ┃ 1┃ 15617┃ ┃ ┃ ┃ 2┃ 15617┃ ┃ ┃ ┃ 3┃ 15617┃ ┃ ┃ ┃ 4┃ 15617┃ ┃ ┃ ┃ 5┃ 15617┃ ┃ ┃ ┃ 6┃ 15617┃ ┃ ┃ ┃ 7┃ 15617┃ ┃ ┃ ┃ 8┃ 15617┃ ┃ ┃ ┃ 9┃ 15617┃ ┃ ┃ ┃小计┃ 9┃ 贷 ┃ 4,620.00┃ ┃ 1┃ 18605┃ ┃ ┃ ┃小计┃ 1┃ 借 ┃ 2,000.00┃ ┃合计┃ 95┃ 贷 ┃ 576,586.77┃ test.bat @echo off setlocal enabledelayedexpansion for /f %%x in (jgh.txt) do ( set jgh=%%x for /f "delims=┃ tokens=1,2,3,4" %%i in (text.txt) do ( set str1=%%i set str2=%%j set str3=%%k set str4=%%l set str2=!str2: =! set str3=!str3: =! set str4=!str4: =! if !flag! EQU 1 ( if !str1! EQU 小计 ( if "!str3!" EQU "贷" set str4=-!str4! if "!str4!" EQU "-" set str4=0 @echo !jgh! !str2! !str3! !str4! ) set flag= ) if !str2! EQU !jgh! set flag=1 ) ) endlocal E:\>test.bat 15600 2 贷 -50,000.00 15601 6 借 26,850.00 15604 5 借 500.00 15605 5 借 47,377.33 15606 3 借 3,320.00 15607 4 借 6,100.00 15608 22 贷 -237,719.00 15609 8 贷 -9,860.00 15610 4 借 79,300.00 15611 3 贷 -107,562.10 15612 5 贷 -197,710.00 15613 3 贷 -32,500.00 15615 12 贷 -109,263.00 15616 2 贷 0 15617 9 贷 -4,620.00 [ Last edited by xycoordinate on 2008-5-23 at 10:59 AM ]

？？？？？？？？？？？？？？？？？!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 我好像写的是set /a str3-=str2 [ Last edited by zw19750516 on 2008-5-23 at 10:32 AM ]

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再次感谢大家的无私帮助!!! 关键是%str4%中的数字有","和".",所以set /a时才报"运算符不存在"!!! test2.bat @echo off setlocal enabledelayedexpansion set hj1=0 set hj2=0 for /f %%x in (jgh.txt) do ( for /f "delims=┃ tokens=1,2,3,4" %%i in (text.txt) do ( set str1=%%i set str2=%%j set str3=%%k set str4=%%l set str2=!str2: =! set str3=!str3: =! set str4=!str4: =! set str4=!str4:,=! set str4=!str4:~,-3! if !flag! EQU 1 ( if !str1! EQU 小计 ( if "!str3!" EQU "贷" set str4=-!str4! if "!str4!" EQU "-" set str4=0 @echo %%x !str2! !str3! !str4! set /a hj1+=!str1! set /a hj2+=!str4! ) set flag= ) if !str2! EQU !jgh! set flag=1 ) ) @echo 合计 !hj1! -- !hj2! E:\>test2.bat 15600 2 贷 -50000 15601 6 借 26850 15604 5 借 500 15605 5 借 47377 15606 3 借 3320 15607 4 借 6100 15608 22 贷 -237719 15609 8 贷 -9860 15610 4 借 79300 15611 3 贷 -107562 15612 5 贷 -197710 15613 3 贷 -32500 15615 12 贷 -109263 15616 2 贷 0 15617 9 贷 -4620 合计 93 -- -585787 [ Last edited by xycoordinate on 2008-5-23 at 12:40 PM ]