lambda test case

lambda.cpp

#include <iostream>
#include <functional>

using namespace std;

function<int()> lambdaReturner()
{
    int c = 7;
    c*=4;
    return [=]() mutable{
            c+=55;
            return c;
    };

}

int main()
{
   auto lambda = lambdaReturner();
   cout << lambda() << '\n'; //83
   cout << lambda() << '\n'; // 138
   cout << lambda() << '\n'; // 193
   cout << lambda() << '\n'; // 248
   cout << lambda() << '\n'; // 303
}

to compile, use:
g++ -o lambda lambda.cpp -std=c++11