Linux計算器運算的程序文件
你們知道什么是Linux計算器么這個非常高深的運用技術將由我來非常講解，Linux計算器NB在哪呢，下面我來進入講述Linux計算器的無限領域。
19--bc Linux計算器
[root@CentOS4 ~]# bcbc 1.06Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.This is free software with ABSOLUTELY NO WARRANTY.For details type `warranty'. (interrupt) use quit to exit.(interrupt) use quit to exit.quit[root@CentOS4 ~]# Linux計算器在bc上常用的運算符有：+加法-減法*乘法/除法（在沒有設置scale精確度時候，自動取整）^指數%求余數（取模）在bc上還可以使用++ 變量-- 變量 變量 ++ 變量 --
[root@CentOS4 ~]# bcbc 1.06Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.This is free software with ABSOLUTELY NO WARRANTY.For details type `warranty'. 1+23234+23/2*326725^315625100%40100%238quit[root@CentOS4 ~]# [root@CentOS4 ~]# bc bc 1.06Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.This is free software with ABSOLUTELY NO WARRANTY.For details type `warranty'. scale=2 /*scale=number*/11/42.7511/33.66quit[root@CentOS4 ~]#
Linux計算器說明：scale=2 是設置小數精確度。/*備注部分*/
bc還可以運行一個Linux計算器帶有復雜運算的程序文件（這屬于bc的一個擴展屬性），如：The following is code that uses the extended features of bc to implement a simpleprogram for calculating checkbook balances. This program is best kept in a file so that it can be used many times withouthaving to retype it at every use.
Linux計算器使用vi建立一個test運算程序：root@CentOS4 ~]# vi testscale=2print ""nCheck book program!"n"print " Remember,deposits are negative transaction."n"print "Initial balance?";bal=read()bal /= 1print ""n"while (1){"current balance = ";bal"transaction?";trans =read()if(trans == 0) break;bal -= trans bal /= 1}
"test" [New] 14L, 268C written[root@CentOS4 ~]# ls計算結果：[root@CentOS4 ~]# bc "testbc 1.06 Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.This is free software with ABSOLUTELY NO WARRANTY.For details type `warranty'. Check book program!Remember,deposits are negative transaction.Initial balance?560current balance = 560.00transaction?400current balance = 160.00transaction?100current balance = 60.00transaction?0quit[root@CentOS4 ~]#
今天Linux計算器就學到這些，發(fā)現很多內容非常的有意思。就近來的學習總結出，要想學好Linux計算器，重要一點是英語要學好。雖然大致的意思能看明白，但很吃力，經常金山詞霸來查某一個單詞的意思，這樣往往浪費了很多的時間在解決單詞的意思。
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