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map data access by key in cpp
// accessing mapped values
#include <iostream>
#include <map>
#include <string>
int main ()
{
std::map<char,std::string> mymap;
mymap['a']="an element";
mymap['b']="another element";
mymap['c']=mymap['b'];
std::cout << "mymap['a'] is " << mymap['a'] << '\n';
std::cout << "mymap['b'] is " << mymap['b'] << '\n';
std::cout << "mymap['c'] is " << mymap['c'] << '\n';
std::cout << "mymap['d'] is " << mymap['d'] << '\n';
std::cout << "mymap now contains " << mymap.size() << " elements.\n";
return 0;
}
Source: www.cplusplus.com
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