diff --git a/c++常量类型的确定.cpp b/c++常量类型的确定.cpp
new file mode 100644
index 0000000..1b9365a
--- /dev/null
+++ b/c++常量类型的确定.cpp
@@ -0,0 +1,18 @@
+//
+// Created by violet on 2026/2/24.
+//
+#include "iostream"
+#include "windows.h"
+int main() {
+    SetConsoleOutputCP(CP_UTF8);
+    long long int i1 = 2212345678;
+    std::cout<<sizeof(i1)<<i1<<std::endl;
+    char a = 3;
+    char b = 32;
+    char c = 16;
+    char d = 17;
+    char e = '5';
+    char f = 126;
+    std::cout << f << std::endl;
+    std::cout <<c<<a<<b<<d<<e<<std::endl;
+}
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diff --git a/字符串.cpp b/字符串.cpp
new file mode 100644
index 0000000..9c36fbd
--- /dev/null
+++ b/字符串.cpp
@@ -0,0 +1,14 @@
+
+//
+// Created by violet on 2026/2/24.
+//
+#include <iostream>
+namespace std {
+    int x =1;
+}
+int main() {
+    int a = 1;
+    auto b = std::x+1;
+    std::cout <<b<< std::endl;
+    return 0;
+}
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diff --git a/转义字符.cpp b/转义字符.cpp
new file mode 100644
index 0000000..4b64216
--- /dev/null
+++ b/转义字符.cpp
@@ -0,0 +1,13 @@
+//
+// Created by violet on 2026/2/24.
+//
+//转义字符：将普通的字符使用\作为开头，将其含义进行转换，对照得到ascii表的控制字符的功能
+//\n \t \\ \'\"
+#include "iostream"
+#include "windows.h"
+int main() {
+    SetConsoleOutputCP(CP_UTF8);
+    std::cout<<"aa\tbbbb"<< std::endl;
+    std::cout<<"aa\t\tbbbb"<<std::endl;
+    std::cout<<"aa\taabbbbaabbbb"<<std::endl;
+}
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