Write a function to compute the following series:

Write a test program that displays the following table:

```
#include
#include
#include
using namespace std;

double m(int n)
{
double sum = 0;

for (int i = 1; i <= n; i++)
sum += i * 1.0 / (i + 1);

return sum;
}

int main()
{
cout << "i\t\tm(i)" << endl;
for (int i = 1; i <= 20; i++)
cout << i << "\t\t" << m(i) << endl;

return 0;
}
```