第11课。

11/Exercise2.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <stdbool.h>
+#define INCIRCLE false
+#define OUTCIRCLE true
+
+void del(int *p, int m) {
+    int nowPos = 0, count = 0, outCount = 0;
+    for (outCount = 0; outCount < m - 1; outCount++) {
+        count = 0;
+        while (count < 3) {
+            if ( *(p + nowPos) == INCIRCLE) {
+                count++;
+            }
+            nowPos = (nowPos + 1) % m;
+        }
+        *(p + ((nowPos + m - 1) % m)) = OUTCIRCLE;
+    }
+    for (;;nowPos = (nowPos + 1) % m) {
+        if (*(p+nowPos) == INCIRCLE) {
+            printf("%d\n", nowPos + 1);
+            break;
+        }
+    }
+}
+
+int main() {
+    int num[50] = {0};
+    int n = 0;
+    scanf("%d", &n);
+    del(num, n);
+    return 0;
+}