Finished first group of assignments

programs/lst22/info.json

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+{
+    "name": "List 2ー2 +$\\\\alpha$",
+    "description": "2桁以上の正の整数の十の位の数字を表示するプログラム。",
+    "output": {
+        "type": "screenshot",
+        "content": "./assets/lst22.png"
+    }
+}

programs/lst22/main.c

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+#include <stdio.h>
+
+int main(void) {
+    int n;
+
+    printf("Integer n: ");
+    scanf("%d", &n);
+
+    // Don't trust user input
+    if (n < 10) {
+        printf("Integer n must be more than 2 digits.");
+        return 1;
+    }
+
+    printf("Tens digit of interger n is %d.", n / 10 % 10);
+
+    return 0;
+}