From 388abf324ca231ba5713363637210f9ae09e5620 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=BD=AF=E5=AE=89=E7=A7=91=E6=8A=80=EF=BC=88SoftSec-Tech?=
 =?UTF-8?q?=EF=BC=89?= <opensource@softsec-tech.cn>
Date: Mon, 27 Oct 2025 12:28:16 +0800
Subject: [PATCH] Add basic calculator functionality in test1.cpp

Implement a basic calculator using big_data_int class.
---
 test1.cpp | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 test1.cpp

diff --git a/test1.cpp b/test1.cpp
new file mode 100644
index 0000000..b1c4244
--- /dev/null
+++ b/test1.cpp
@@ -0,0 +1,49 @@
+#include <string>
+#include "big_data_int.h"
+
+string getString(){
+    auto* str = new string();
+    str->reserve(100);
+    std::cout << "请输入内容：";
+    std::cin.getline(str->c_str(), 100);  // 直接读取到缓冲区
+
+    std::cout << "输入内容：" << str->c_str() << std::endl;
+
+    return str;
+}
+
+int main() 
+{
+    cout<<"please input two numbers:"<<endl;
+    string s_a, s_b;
+
+    s_a = getString();
+    s_b = getString();
+
+    cout<<"Please input the operator(+,-,*,/,%):"<<endl;
+    string op;
+    cin>>op;
+    big_data_int a(s_a), b(s_b), c;
+    switch (op.c_str()[0]) {
+        case '+':
+            c = a + b;
+            break;
+        case '-':
+            c = a - b;
+            break;
+        case '*':
+            c = a * b;
+            break;
+        case '/':
+            c = a / b;
+            break;
+        case '%':
+            c = a % b;
+            break;
+        default:
+            cout<<"Wrong operator input"<<endl;  
+            return -1;
+    }
+    cout <<"Result is:"<<endl<<c.data()<<endl;
+    return 0;
+}