c++中lambda表达式的用法

#include <iostream>
using namespace std;

int main(){
    int a = 10;
    auto func1 = [=](int b){return a +b+ 1;};
    auto func2 = [&](int b,int c){return a+b+c + 1;};
    cout << func1(1) << endl;
    cout << func2(1,2) << endl;
    a++;
    cout << func1(1) << endl;
    cout << func2(1,2) << endl;
    return 0;
}