how to make a map in c++ code example
Example 1: map declaration c++
#include <map>
#include <string>
std::map<int, std::string> map_;
map_[1] = "mercury";
map_[2] = "mars";
map_.insert(std::make_pair(3, "earth"));
return map_[2];
Example 2: map in c++
#include <bits/stdc++.h>
#include <iostream>
#include <map>
using namespace std;
void mapDemo(){
map<int, int> A;
A[1] = 100;
A[2] = -1;
A[3] = 200;
A[100000232] = 1;
map<char, int> cnt;
string x = "Sumant Tirkey";
for(char c:x){
cnt[c]++;
}
cout<< cnt['a']<<" "<<cnt['z']<<endl;
}
int main() {
mapDemo();
return 0;
}