Sine wave Generation

I am working on a project that I want to output a sine wave of 50Hertz. I have defined it as follows:

`float amplitude = 10.0f;
float frequency = 50.0f;
//float phase = 0.0f;
float samples = 150.0f;    
for (int t = 0; t<samples; t++)
{
float wt = (float)(amplitude * Math.Sin((2.0f * Math.PI * frequency * t / 
samples)));``
}`

When I run the code I am not getting the expected results when I plot the values on a graph. Does any one know if I am doing this right or what my problem is. Thanks