#include<iostream>
#include<map>
 
using namespace std;
 
#define ArrSize 4
 
int main() {
 
    char *arr1[ArrSize] = {"key1", "key2", "key3", "key4"};
    char *arr2[ArrSize] = {"value1", "value2", "value3", "value4"};
 
    map<string, string> m;
 
    for(auto i = 0; i < ArrSize; i++) {
      m.insert(pair<string, string>(arr1[i], arr2[i]));
      //alternative variant with operator[]
      //m[arr1[i]] = arr2[i];
    }
 
    for(auto i : m) {
        cout << i.first << "=>" << i.second << endl;
    }
}

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