Create 许红波239500234.md

homework1/许红波239500234.md

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+第一题
+#include <iostream>
+using namespace std;
+int main() {
+    int num1, num2, choice;
+    cout << "请输入第一个整数：";
+    cin >> num1;
+    cout << "请输入第二个整数：";
+    cin >> num2;
+    cout << "请选择操作（1:加法，2:减法）：";
+    cin >> choice;
+    if (choice == 1) {
+    std::cout << "结果: " << num1 + num2 << std::endl;
+    } else if (choice == 2) {
+    std::cout << "结果: " << num1 - num2 << std::endl;
+    } else {
+    std::cout << "无效的操作选择!" << std::endl;
+    }
+    return 0;
+}
+第二题
+#include <iostream>
+using namespace std;
+int main() {
+    int number;
+    cout << "请输入一个整数：";
+    cin >> number;
+    if (number % 2 == 0) {
+        std::cout << number << " 是偶数。" << std::endl;
+    } else {
+        std::cout << number << " 是奇数。" << std::endl;
+    }
+    return 0;
+}
+第三题
+#include <iostream>
+#include <cstdlib>
+#include <ctime>
+int main() {
+    std::srand(std::time(0));
+    int secretNumber = std::rand() % 10 + 1;
+    int guess;
+    int attempts = 0;
+    std::cout << "欢迎来到猜数字游戏！" << std::endl;
+    std::cout << "我已经想好了一个 1 到 10 之间的数字。" << std::endl;
+    while (true) {
+        std::cout << "请输入你的猜测: ";
+        std::cin >> guess;
+        attempts++;
+        if (guess < secretNumber) {
+            std::cout << "猜小了！" << std::endl;
+        } else if (guess > secretNumber) {
+            std::cout << "猜大了！" << std::endl;
+        } else {
+            std::cout << "恭喜你，猜对了！" << std::endl;
+            std::cout << "你一共猜了 " << attempts << " 次。" << std::endl;
+            break; // 猜对了，退出循环
+        }
+    }
+    return 0;
+}