PLotting a sine curve

[crazyfans86]

Hi,

I have to write a program in C programming to plot a sin curve using array.
i would appreciate if someone could give me and give me some hints on how about to do that.

thanks. :D

[Narue]

Do you need to actually draw it, or just plot the coordinates so that they can be imported into something like Excel?

[crazyfans86]

if possible i could actually like to know ways of doing it ?
i've heard of plotting the cordinates using excel, perhaps u could guide me further in how about to do that if possible..

thanks.

[Narue]

Well, the code is easy if you know the formulas:

#include <math.h>
#include <stdio.h>

int main ( void )
{
  double pi = 3.14159;
  int i;

  for ( i = 0;  i <= 360 / 20;  ++i ) {
    double degrees = 20 * i;
    double radians = 2 * pi * ( degrees / 360.0 );

    printf ( "%f,%f\n", degrees, sin ( radians ) );
  }

  return 0;
}

Just take the output of that program, then import it into Excel and make a chart out of it.