Question

How to print map elements by key in C++

Answer 1

#include <iostream>
#include <map>

using std::cout;
using std::endl;
using std::map;

int main()
{
	map<char, int> mp;

	for (int i = 0; i < 5; i++)
		mp.insert(std::pair<char, int>('a' + i, 97 + i));

	cout << mp['a'] << endl;
	cout << mp['c'] << endl;
	cout << mp['d'] << endl;

	return 0;
}

/*
run:

97
99
100

*/

 

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