commit for once

1 files changed, 23 insertions, 0 deletions

diff --git a/3/9_data_structures/42_ace_structure.c b/3/9_data_structures/42_ace_structure.c
new file mode 100644
index 0000000..8b4e92d
--- /dev/null
+++ b/3/9_data_structures/42_ace_structure.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+struct ACE {
+    short       v;
+    struct ACE *p;
+};
+
+// B. it's a linked list of short values that are multiplied.
+short test(struct ACE *ptr) {
+    short v = 1;
+    while (ptr) {
+        v *= ptr->v;
+        ptr = ptr->p;
+    }
+    return v;
+}
+
+int main(void) {
+    struct ACE a = {2, NULL};
+    struct ACE b = {3, NULL};
+    a.p = &b;
+    printf("%d\n", test(&a));
+}