Minor optimization of the summation algorithm.

4b7ce3d1 · Tobias Langer · a4c6f3e6 · 4b7ce3d1
Commit 4b7ce3d1 authored Nov 06, 2016 by Tobias Langer
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test.c
+1 -1

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--- a/test.c
+++ b/test.c
@@ -5,7 +5,7 @@
 int sum(int n)
 {
-    return ((n + 1) * n) / 2;
+    return ((n - 1) * n) / 2;
 }
 void usage(const char* app_name, const char* err_string)