done

programs/p413/info.json

@@ -0,0 +1,10 @@
+{
+  "language": "C",
+  "name": "演習 4-13",
+  "description": "1から$n$までの総和を求めるプログラム。",
+  "output": {
+    "type": "screenshot",
+    "content": "./assets/p413.png"
+  },
+  "note": ""
+}