diff --git a/homework_2.cpp b/homework_2.cpp
deleted file mode 100644
index 4b79119..0000000
--- a/homework_2.cpp
+++ /dev/null
@@ -1,24 +0,0 @@
-#include <iostream>
-#include <iomanip>
-#include <cmath>
-
-using namespace std;
-
-int main() {
-    double r;
-    const double PI = 3.14;
-    cout << "\u8f93\u5165\u534a\u5f84: ";
-    cin >> r;
-
-    if (r < 0 || r > 100) {
-        cout << "\u8f93\u5165\u9519\u8bef: \u534a\u5f84\u5fc5\u987b\u4e3a0\u5230100\u4e4b\u95f4" << endl;
-        return 1;
-    }
-
-    double volume = (4.0 / 3) * PI * pow(r, 3);
-
-    cout << fixed << setprecision(2);
-    cout << "\u4f53\u79ef: " << volume << endl;
-
-    return 0;
-}