inital commit

1 files changed, 23 insertions, 0 deletions

diff --git a/2.9.c b/2.9.c
new file mode 100644
index 0000000..5a0ceb9
--- /dev/null
+++ b/2.9.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+int bitcount(unsigned num);
+
+int 
+main(void)
+{
+  int x = 1337; /* a random int */
+  printf("%d\n", bitcount(x));;
+
+  return 0;
+}
+
+int 
+bitcount(unsigned num)
+{
+  int bits;
+
+  for (bits = 0; num != 0; num &= (num-1))
+    bits++;
+
+  return bits;
+}