added programs

programs/p311/info.json

@@ -0,0 +1,10 @@
+{
+  "language": "C",
+  "name": "演習 3-11",
+  "description": "論理OR演算子を使用して2つの整数値の差が10以下であるか、11以上であるかを検証するプログラム。",
+  "output": {
+    "type": "screenshot",
+    "content": "./assets/p311.png"
+  },
+  "note": ""
+}

programs/p311/main.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+int main(void) {
+    int a, b;
+
+    printf("Int A: ");
+    scanf("%d", &a);
+    printf("Int B: ");
+    scanf("%d", &b);
+
+    int diff = a - b;
+
+    if (diff >= 11 || diff <= -11) {
+        printf("Difference is greater than or equal to 11.\n");
+    } else {
+        printf("Difference is less than or equal to 10.\n");
+    }
+
+    return 0;
+}