use case diagram

bac2/os/chap3/group.c

@@ -0,0 +1,23 @@
+#include "mergeSort.h"
+
+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+
+#define printlist(s, x) printf("%s = [", #x); for (int i = 0; i < s; ++i) { printf("%d, ", x[i]); } printf("\b\b]\n");
+
+#define listSize 10000000
+int list[listSize];
+
+int main(void)
+{
+	srand(time(NULL));
+	for (int i = 0; i < listSize; ++i) {
+		list[i] = rand();
+	}
+	/* printlist(listSize, list); */
+
+	margs_t args = {list, 0, 9};
+	merge_sort(&args);
+	printlist(listSize, list);
+}