1 files changed, 27 insertions, 0 deletions
diff --git a/p1/main.c b/p1/main.c
new file mode 100644
index 0000000..e227e80
--- /dev/null
+++ b/p1/main.c
@@ -0,0 +1,27 @@
+/*
+ * If we list all the natural numbers below 10 that are multiples of 3 or 5,
+ * we get 3, 5, 6 and 9. The sum of these multiples is 23.
+ *
+ * Find the sum of all the multiples of 3 or 5 below 1000.
+ */
+
+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+
+	int sum = 0;
+	int i;
+
+	for (i = 1; i < 1000; ++i)
+	{
+		if (i % 3 == 0 || i % 5 == 0)
+		{
+			sum += i;
+		}
+	}
+
+	printf("sum: %d\n", sum);
+
+	return 0;
+}