added shebang, replaced if-elses with shortcut notation, ported online mean and variance calc to mean.awk

1 files changed, 9 insertions, 8 deletions

diff --git a/sum3.awk b/sum3.awk
index b4100a7..8ceda8b 100644
--- a/sum3.awk
+++ b/sum3.awk
@@ -1,8 +1,16 @@
+#!/usr/bin/awk -f
+
 ### sum3.awk, print sums of numeric columns
 # input:    rows of integers and strings
 # output:   sums of numeric columns
 #   assumes every line has same layout
 
+
+function isnum(n) {
+    return n ~ /^[+-]?[0-9]+$/
+}
+
+
 NR==1 {
     nfld = NF
     for (i=1; i<=NF; i++)
@@ -17,15 +25,8 @@ NR==1 {
 
 END {
     for (i=1; i<=nfld; i++) {
-        if (numcol[i])
-            printf("%g", sum[i])
-        else
-            printf("--")
+        (numcol[i]) ? printf("%g", sum[i]) : printf("--")
         printf(i < nfld ? "  " : "\n")
     }
 }
 
-function isnum(n) {
-    return n ~ /^[+-]?[0-9]+$/
-}
-