save code

old/lession8.cpp

@@ -0,0 +1,20 @@
+#include <iostream>
+#include <cstdlib>
+#include <ctime>
+void draw_once() {
+    int r = std::rand() % 100;
+    if (r < 70) std::cout << "普通\n";
+    else if (r < 95) std::cout << "稀有\n";
+    else std::cout << "超稀有\n";
+}
+int main() {
+    std::srand(std::time(nullptr));
+    int n = 0;
+    std::cout << "抽几次？";
+    std::cin >> n;
+    for ( int i =1; (i <= n && i < 100 && n<=100); i++)
+    {
+        std::cout << "第" << i << "抽";
+        draw_once();
+    }
+    return 0;}