如何在lambda中返回字符串而不是bool？

Question

  

如何返回字符串＆＃34; x小于y＆＃34;或者＆＃34; x大于y＆＃34;在这种情况下，而不是bool值？

#include <iostream>
using namespace std;

int main() {
    int n, m;
    cin >> n >> m;
    auto compare = [](int x, int y) { return  x < y; };
    cout << ((n == m) ? "the same" : to_string(compare(n, m)));

    return 0;
}

Answer 1

auto compare = [](int x, int y) {
  return x < y ? "x is less than y" : "x is greater than y";
};