the nature of this calculation isnt important, but what is important is that when this is compiled, I get an error sayingCode:Drag = 0.5*p*v^2*A*Cd/100;
'^': Illegal, left operand has type 'double'
How do I stop this? every number is of the long type, v is not double.
Use the function pow for exponentiation -- ^ is the exclusive OR operator.
7. It is easier to write an incorrect program than understand a correct one.
40. There are two ways to write error-free programs; only the third one works.*
Now my compiler says that the identifier pow could not be found.
Code:#include <cmath> using std::pow;
7. It is easier to write an incorrect program than understand a correct one.
40. There are two ways to write error-free programs; only the third one works.*
Or, if you code that works with C or C++
Code:#include <math.h>
Or if you want code that will continue to work as C or C++:Originally Posted by grumpy
Ya, we all know that even though the .h C headers are deprecated, they won't be removed in the forseeable future. But I felt the need to mention it to placate the standards gestapo on this forum.Code:#if defined(__cplusplus) #include <cmath> using std::pow; #else #include <math.h> #endif
Just because I don't care doesn't mean I don't understand.
