How does this look so far?

double PI = 3.1415926535;
int count;
int i;
double angle;
double x, y;
x = pi / 2;
y = sin(x);

double sin_of_angle = sin(angle);
pDC->MoveTo(60, 150);
pDC->LineTo(60, 300);
pDC->LineTo(575, 300);
pDC->MoveTo(60, 300);
pDC->LineTo(60, 450);

switch (m_Chart) {

case Sin:
for(i = 0; i < count; i++);