int sum= 0;
int prod= 1;
std::for_each(val.begin(),val.end(),[&](int v){sum+= v; prod*= v; std::cout << sum << " " << prod << std::endl;});

sum= 0;
prod= 1;
std::for_each(val.begin(),val.end(),
              [&](int v){
                sum+= v;
                prod*= v;
                std::cout << sum << " " << prod << std::endl;
              });