map defualt value c++
// C++ program to illustrate a Map
// initialize with default value
#include <bits/stdc++.h>
using namespace std;
// Structure Node
struct Node {
int value = -1;
};
// Driver Code
int main()
{
// Map initialize with key value
// pair with each pair mapped with
// structure Node
map<int, Node> Map;
// Print the default value of 1
// store in Map
cout << Map[1].value << endl;
return 0;
}