malloc: allocate memory block and print address

hogs/malloc.c

@@ -0,0 +1,10 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+    size_t size = strtoul(argv[1], NULL, 0);
+    char *p = malloc(size);
+    printf("%zu bytes at %p\n", size, p);
+    sleep(10);
+    return 0;
+}