From 40f06be8bce6a779e7a3f3a8aac8954c0995f2fb Mon Sep 17 00:00:00 2001
From: Zengtudor <zengtudor@outlook.com>
Date: Sun, 4 Aug 2024 14:40:17 +0800
Subject: [PATCH] learn operator

---
 .gitignore                  |  2 ++
 day3/afternoon/operator.cpp | 17 +++++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 day3/afternoon/operator.cpp

diff --git a/.gitignore b/.gitignore
index a8b8ceb..dd155ab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,3 +36,5 @@
 
 tempCodeRunnerFile
 tempCodeRunnerFile.cpp
+day3/afternoon/test
+day3/afternoon/operator
diff --git a/day3/afternoon/operator.cpp b/day3/afternoon/operator.cpp
new file mode 100644
index 0000000..1bf8c95
--- /dev/null
+++ b/day3/afternoon/operator.cpp
@@ -0,0 +1,17 @@
+#include <bits/stdc++.h>
+using std::cout,std::cin,std::vector,std::endl;
+
+std::ostream& operator<<(std::ostream& os,vector<int> &v){
+    os<<"vector<int> [";
+    for(size_t i=0;i<v.size();i++){
+        os<<v[i]<<(i!=v.size()-1?",":"]\n");
+    }
+    return os;
+}
+
+int main(){
+    vector<int> v;
+    v.push_back(1);
+    v.push_back(2);
+    cout<<v<<endl;
+}
\ No newline at end of file