Answer to question define-10

Top/C++/Functions/Definitions/Answer-define-10

Answer to Question define-10

Here is one possible definition.

  double seconds(int ms)
  {
    double x = ms;
    return x/1000.0;
  }

It is not really necessary to have variable x. You can convert from int to double using (double), and write

  double seconds(int ms)
  {
    return ((double) ms)/1000.0;
  }

You can also perform an operation between an integer and a real number. The integer will automatically be converted to a real number. So you can write

  double seconds(int ms)
  {
    return ms/1000.0;
  }

But

  double seconds(int ms)
  {
    return ms/1000;
  }

does not work because it divides two integers, so it throws away the fractional part.