draft

programs/p313/info.json

@@ -1,10 +1,10 @@
 {
-  "language": "",
-  "name": "",
-  "description": "",
+  "language": "C",
+  "name": "演習 3-13",
+  "description": "教科書のList 3-18 をSwitch文で書き換えたプログラム。",
   "output": {
-    "type": "screenshot | text",
-    "content": ""
+    "type": "screenshot",
+    "content": "./assets/p313.png"
   },
   "note": ""
 }

programs/p313/main.c

@@ -0,0 +1,35 @@
+#include <stdio.h>
+
+int main(void) {
+    int month;
+
+    printf("Input month: ");
+    scanf("%d", &month);
+
+    switch (month) {
+        case 12:
+        case 1:
+        case 2:
+            puts("It is winter.");
+            break;
+        case 3:
+        case 4:
+        case 5:
+            puts("It is spring.");
+            break;
+        case 6:
+        case 7:
+        case 8:
+            puts("It is summer.");
+            break;
+        case 9:
+        case 10:
+        case 11:
+            puts("It is autumn.");
+            break;
+        default:
+            puts("Unknown month.");
+    }
+
+    return 0;
+}