1 files changed, 21 insertions, 0 deletions
diff --git a/sum1.awk b/sum1.awk
new file mode 100644
index 0000000..02b7d6a
--- /dev/null
+++ b/sum1.awk
@@ -0,0 +1,21 @@
+### sum1.awk, print column sums
+# input: rows of numbers
+# output: sum of each column
+#   missing entries are treated as zeros
+
+{
+    for (i=1; i<=NF; i++)
+        sum[i] += $i
+    if (NF > maxfld)
+        maxfld = NF
+}
+
+END {
+    for (i=1; i<=maxfld; i++) {
+        printf("%g", sum[i])
+        if (i < maxfld)
+            printf("  ")
+        else
+            printf("\n")
+    }
+}