Add chapter 3-6 C cards to inf series

series/inf.json

@@ -6,7 +6,7 @@
   "source_remote": "r1",
   "answer_remote": "r1a",
   "fallback_branch": "deploy",
-  "default_card": "bss",
+  "default_card": "control",
   "cards": [
     {
       "id": "asm-c-gcc",
@@ -25,6 +25,30 @@
       "repo": "lab-rv32i-strlen-bss-data-stack",
       "branch": "deploy",
       "title": "rv32i-c / bss-data-stack"
+    },
+    {
+      "id": "control",
+      "repo": "lab-rv32i-c-control-flow",
+      "branch": "deploy",
+      "title": "rv32i-c / control-flow"
+    },
+    {
+      "id": "functions",
+      "repo": "lab-rv32i-c-functions-program-structure",
+      "branch": "deploy",
+      "title": "rv32i-c / functions-program-structure"
+    },
+    {
+      "id": "pointers",
+      "repo": "lab-rv32i-c-pointers-arrays",
+      "branch": "deploy",
+      "title": "rv32i-c / pointers-arrays"
+    },
+    {
+      "id": "structures",
+      "repo": "lab-rv32i-c-structures",
+      "branch": "deploy",
+      "title": "rv32i-c / structures"
     }
   ]
 }