c++逆序map怎么输出

逆序map可以使用反向迭代器（rbegin()和rend()）进行输出。具体实现方法如下：

#include <iostream>
#include <map>

using namespace std;

int main() {
    map<int, string> myMap;

    myMap[1] = "one";
    myMap[2] = "two";
    myMap[3] = "three";
    myMap[4] = "four";

    // 使用反向迭代器输出
    for (auto it = myMap.rbegin(); it != myMap.rend(); it++) {
        cout << it->first << ": " << it->second << endl;
    }

    return 0;
}

输出结果为：

4: four
3: three
2: two
1: one