怎样将两个赋了值得变量进行比较呢if (< a b)......为什么每次都提示我参数类型

yu-gn · 发表于 2002-12-26 11:44:00

怎样将两个赋了值得变量进行比较呢if (< a b)......为什么每次都提示我参数类型错误呢？？[br]

alin · 发表于 2002-12-26 13:31:00

yu-gn · 发表于 2002-12-26 13:40:00

(setq pfile1 (open file1 "r")
      line (read-line pfile1)
      lineNum 1
      DateList1 (list "hotHuaDm" "hotHuaNum""hotHuaJL""hothuasmx")
      DateList2 (list "hotHuaDist" "hotHuaAngle" "hotHuaSpeed" "hotHuaDepth")
(setq dist1 (read hotHuaDist)
      dist (+ dist1 hotHuaJL)
ang2 (read hotHuaAngle)
            speed hotHuaSpeed
(if (<= hothuadepth  hothuasmx)
   (setq depth (- hothuasms hothuadepth))
   (setq depth hothuadepth)
   )

alin · 发表于 2002-12-26 13:52:00

CAD菜鸟 · 发表于 2002-12-26 15:05:00

从你贴出的程序看，至少有以下错误：
1、括号不匹配；
  (setq pfile1 (open file1 "r")
      line (read-line pfile1)
      lineNum 1
      DateList1 (list "hotHuaDm" "hotHuaNum""hotHuaJL""hothuasmx")
      DateList2 (list "hotHuaDist" "hotHuaAngle" "hotHuaSpeed" "hotHuaDepth")
  少一右括号，
(setq dist1 (read hotHuaDist)
   dist (+ dist1 hotHuaJL)
   ang2 (read hotHuaAngle)
   speed hotHuaSpeed
少一右括号，

2、read后应跟字符串
(setq dist1 (read hotHuaDist)
      dist (+ dist1 hotHuaJL)
      ang2 (read hotHuaAngle)
      speed hotHuaSpeed
)中read后的hotHuaDist和hotHuaAngle是什么？它们导致了参数类型错误。

3、变量前后不一致
(if (<= hothuadepth  hothuasmx)
      (setq depth (- hothuasms hothuadepth))
      (setq depth hothuadepth)
   ) 中的hothuasms再哪来的？hothuadepth在前为"hotHuaDepth"。

目前发现此些错误，供你参考。

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怎样将两个赋了值得变量进行比较呢if (< a b)......为什么每次都提示我参数类型

你至少要把代码段贴出来

代码

(setq depth (- hothuasms hothuadepth))中是否有错？

怎能没错？