diff --git a/STL/STL-map/map.cpp b/STL/STL-map/map.cpp
index 9c272c4..222a8fb 100644
--- a/STL/STL-map/map.cpp
+++ b/STL/STL-map/map.cpp
@@ -1,7 +1,32 @@
 #include <iostream>
+#include <string>
 #include <map>
 using namespace std;
 int main(int argc, char* argv[]){
-	 
+	 auto cmp = [](auto a, auto b){
+	 	return a < b;
+	 };
+	 //与set类似，但是是以std::pair的形式返回的，记得写first,second 
+	 map<int, string> a;
+	 map<int, string, decltype(cmp)> b(cmp);
+	 map<int, string> c;
+	 b.insert({1,"111"});
+	 b.insert({2,"222"});
+	 b.insert({5,"555"});
+	 b.insert(make_pair(3,"333"));
+	 b.emplace(make_pair(4,"444"));
+	 cout << b.count(3) << endl;
+	 for(auto it = b.begin(); it != b.end(); it++){
+	 	cout << it->first << ", " << it->second << " ";
+	 }
+	 cout << endl;
+	 cout << b.find(3)->first << ", "<< b.find(3)->second << endl;
+	 cout << b.upper_bound(4)->first << ", " << b.upper_bound(4)->second << endl;
 	return 0;
 }
+/*
+1
+1, 111 2, 222 3, 333 4, 444 5, 555
+3, 333
+5, 555
+*/
diff --git a/STL/STL-map/map.exe b/STL/STL-map/map.exe
new file mode 100644
index 0000000..1fb09dc
Binary files /dev/null and b/STL/STL-map/map.exe differ