Thread: Using power

What did i do wrong here?

I am using GNU emacs to compile

Code:

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

int main ()
{
  double time; /* declare time as a power */;
  double g; /* declare g as a decimal */;
  double pi; /* declare pi as a decmal */;
  double length; /* declare length as a double value */

time = 60;
g = (32.260);
pi = (3.1416);
length = g * (time/pi);

printf ("time/pi raised to the 2nd power is %f\n", pow(time/pi, 2));
printf("\nThe length to complete one swing in one second is: %f, inches");

  return 0;
}

Code:

printf("\nThe length to complete one swing in one second is: %f, inches");

Your closing double quote is misplaced.

Code:

printf("\nThe length to complete one swing in one second is: %f", inches);

You might not want to have a variable called time because that's the name of a function in <time.h>.

Originally Posted by wonderpoop

What did i do wrong here?

You didn't use [code][/code] tags, duh.

>What did i do wrong here?
>printf("\nThe length to complete one swing in one second is: %f, inches");
length is missing from your argument list. Try:

Code:

printf("\nThe length to complete one swing in one second is: %f inches", length);

Originally Posted by wonderpoop

What did i do wrong here?

Code:

  double length; /* declare length as a double value */

  g = (32.260);

This is not a syntax error but is something to watch out for. Comments should be there so that when someone else, or yourself in six months time, come to read your code their understanding of the code is advanced by reading the comment.

Declaring a variable and then commenting that you just declared a variable helps no-one.

Assigning a value like 32.26 to a variable named g without explaining why in a comment also helps no-one.

Press EDIT. Add code tags. Also, get an editor that has syntax hilighting, and you'd see where your problem is. Start counting " marks.


Quzah.

Especially on this line.

Code:

printf("\nThe length to complete one swing in one second is: %f", inches", length);