第五课。

05/Optional02.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+
+int inCircle(int centerX, int centerY, int posX, int posY) {
+    int x_distance = 0, y_distance = 0;
+    x_distance = centerX - posX;
+    y_distance = centerY - posY;
+    if (x_distance * x_distance + y_distance * y_distance <= 1) {
+        return 1;
+    }
+    else {
+        return 0;
+    }
+}
+
+int main() {
+    int pos_x = 0 , pos_y = 0;
+    scanf("%d %d", &pos_x, &pos_y);
+    if (inCircle(2, 2, pos_x, pos_y)) {
+        printf("10m");
+    }
+    else if (inCircle(-2, 2, pos_x, pos_y)) {
+        printf("9m");
+    }
+    else if (inCircle(-2, -2, pos_x, pos_y)) {
+        printf("8m");
+    }
+    else if (inCircle(2, -2, pos_x, pos_y)) {
+        printf("7m");
+    }
+    else {
+        printf("0m");
+    }
+    return 0;
+}