c_cpp 地图::找到（）;

Posted 2021-05-14

// map::find
#include <iostream>
#include <map>
using namespace std;

int main() {
	map<char, int> map1;
	map<char, int>::iterator it;

	map1['a'] = 50;
	map1['b'] = 100;
	map1['c'] = 150;
	map1['d'] = 200;

	it = map1.find('b');
	if (it != map1.end()) {
		map1.erase(it);
	}

	// print content:
	cout << "a => " << map1.find('a')->second << endl;
	cout << "c => " << map1.find('c')->second << endl;
	cout << "d => " << map1.find('d')->second << endl;

	return 0;
}