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

1 files changed, 6 insertions, 7 deletions

diff --git a/sum1.awk b/sum1.awk
index 02b7d6a..2f5a041 100644
--- a/sum1.awk
+++ b/sum1.awk
@@ -1,3 +1,5 @@
+#!/usr/bin/awk -f
+
 ### sum1.awk, print column sums
 # input: rows of numbers
 # output: sum of each column
@@ -6,16 +8,13 @@
 {
     for (i=1; i<=NF; i++)
         sum[i] += $i
-    if (NF > maxfld)
-        maxfld = NF
+    if (NF > nf_max)
+        nf_max = NF
 }
 
 END {
-    for (i=1; i<=maxfld; i++) {
+    for (i=1; i<=nf_max; i++) {
         printf("%g", sum[i])
-        if (i < maxfld)
-            printf("  ")
-        else
-            printf("\n")
+        (i < nf_max) ? printf("  ") : printf("\n")
     }
 }