算術計算

Question

我有一個輸入記事本文件，如下所示：

樣本輸入文件：

蔬菜和價格

kg rate total 
Tomato 4 50 100 
potato 2 60 120 
Beans 3 80 240 

Overalltotal：（100 + 120 + +240）= 460

我需要乘以第2列和第3列，並檢查總數，如果它是正確的，整體總數也是如此。如果這不是正確的，我們需要在同一文件中的錯誤信息打印如下圖所示

輸入代碼在這裏

樣本輸出文件：

蔬菜和價格

kg rate vegtotal 

Tomato 4 50 200 
potato 2 60 120 
Beans 3 80 240 

Overalltotal ：（200 + 120 ++ 240）= 560

計算錯誤： V egtotal番茄是錯誤的：它應該是200，而不是100 Overalltotal是錯誤的：它應該是560而不是460

到目前爲止的代碼：

for f in Date*.log; do 
     awk 'NR>1{ a[$1]=$2*$3 }{ print }END{ printf("\n"); 
      for(i in a) 
     { if(a[i]!=$4) 
       { print i,"Error in calculations",a[i] } 
      } }' "$f" > tmpfile && mv tmpfile "$f"; 

done 

它計算總，但沒有比較價值。我怎樣才能比較它們並打印到相同的文件？

Answer 1

輸入

akshay@db-3325:/tmp$ cat file 
kg rate total 
Tomato 4 50 100 
potato 2 60 120 
Beans 3 80 240 

輸出

akshay@db-3325:/tmp$ awk 'FNR>1{sum+= $2 * $3 }1;END{print "Total : "sum}' file 
kg rate total 
Tomato 4 50 100 
potato 2 60 120 
Beans 3 80 240 
Total : 560 

說明

awk '        # call awk 
    FNR>1{       # if no of lines of current file is greater than 1, 
            # then , this is to skip first row 
      sum+= $2 * $3   # sum total which is product of value 
            # in column2 and column3 
    }1;       # 1 at the end does default operation, 
            # that is print current record (print $0) 
            # if you want to skip record being printed remove "1", so that script just prints total 
    END{       # end block 
      print "Total : "sum # print sum 
    } 
    ' file 

Answer 2

複雜AWK溶液：

awk 'NF && NR>1 && $0!~/total:/{ 
     r=$2*$3; v=(v!="")? v"+"r : r; 
     if(r!=$4){ veg_er[$1]=r" instead of "$4 } 
     err_t+=$4; t+=r; $4=r 
    } 
    $0~/total/ && err_t { 
     print $1,"("v")",$3,t; print "Error in calculations:"; 
     for(i in veg_er) { print "Veg total for "i" is wrong: it should be "veg_er[i] } 
     print "Overalltotal is wrong: It should be "t" instead of "err_t; next 
    }1' inputfile 

輸出：

kg rate total 
Tomato 4 50 200 
potato 2 60 120 
Beans 3 80 240 

Overalltotal: (200+120+240) = 560 
Error in calculations: 
Veg total for Tomato is wrong: it should be 200 instead of 100 
Overalltotal is wrong: It should be 560 instead of 460 

---

詳細說明：

• NF && NR>1 && $0!~/total:/ - 考慮蔬菜線（excuding 頭和總線）

• r=$2*$3 - 串接所得產物值

• veg_er - - 所述第二的產物和第三字段

• v=(v!="")? v"+"r : r的結果陣列含有錯誤的vegs信息（veg名稱，錯誤的產品價值和真實產品值）

• err_t+=$4 - 累積錯誤總值

• t+=r - 累積真實總值

• $0~/total/ && err_t - 處理總線和錯誤事件