problem 10 done, and problem 7 rewritten (new is_prime algorithm)

p10.c

@@ -0,0 +1,25 @@
+
+/*
+ * http://projecteuler.net
+ * 
+ * Projecteuler - Problem 10
+ * ------------------------
+ * 2010-04-06 Henrik Hautakoski
+ */
+
+#include <stdio.h>
+#include "lib/prime.h"
+
+int main() {
+
+    uint32_t i;
+    uint64_t s = 2;
+
+    for(i=3; i < 2e6; i+=2) {
+        if (is_prime(i))
+            s += i;
+    }
+    printf("%lli\n", s); /* this format throws som warnings but works so whatever */
+
+    return 0;
+}