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cin数据输入.cpp

@@ -2,9 +2,25 @@
 // Created by viole on 2026/2/25.
 //
 #include <iostream>
+#include "windows.h"
 using namespace std;
 int main() {
-    int num ;
+    SetConsoleOutputCP(CP_UTF8);
-    cin >> num;
+    string name;
-    cout << num << endl;
+    double height;
+    int age;
+    cout << "请输入你的姓名:" <<endl;
+    cin >> name;
+
+    cout << "请输入你的身高（cm）:" <<endl;
+    cin >> height;
+
+    cout << "请输入你的年龄:" <<endl;
+    cin >> age;
+    cout << "--------"<<endl;
+    cout << "信息输入完成，您的信息如下："<<endl;
+    cout<<"姓名："<<name<<endl;
+    cout<<"身高："<<height<<endl;
+    cout<<"年龄："<<age<<endl;
+    return 0;
 }

比较运算符.cpp

@@ -0,0 +1,13 @@
+//
+// Created by violet on 2026/2/28.
+//
+#include "iostream"
+using namespace std;
+int main() {
+    //==相等 !=不等 >大于 <小于 <=小于等于>=大于等于
+    int num1 =3;
+    int num2 =4;
+    bool r1 = (num1!=num2);
+    cout<<r1<<endl;
+    return 0;
+}

算数运算符.cpp

@@ -0,0 +1,19 @@
+//
+// Created by violet on 2026/2/28.
+//
+#include "iostream"
+using namespace std;
+int main() {
+    //单目（一个操作数）运算符
+    int num1 = +10;
+    int num2 = -10;
+    cout <<num1<<","<<num2<<endl;
+    //双目（有两个操作数）操作符
+    int num3 = 5+5;
+    int num4 = 5-3;
+    int num5 = 5*5;
+    int num6 = 10/3;
+    int num7 = 10%3;
+    cout<<num3<<","<<num4<<","<<num5<<","<<num6<<","<<num7<<endl;
+    return 0;
+}

赋值运算符.cpp

@@ -0,0 +1,23 @@
+//
+// Created by violet on 2026/2/28.
+//
+#include "iostream"
+using namespace std;
+int main() {
+    int num =2,num1,num2,num3,num4,num5;
+    num +=3;cout<<num<<endl;
+    bool a = true;
+    cout<<a<<endl;
+
+
+    num -=2,cout<<num<<endl,
+    num *=2,cout<<num<<endl,
+    num /=3,cout<<num<<endl,num %=2,cout<<num<<endl;
+    int money = 50;
+    money-=5;
+    money+=10;
+    money-=2;
+    money*=2;
+    cout<<money<<endl;
+    return 0;
+}