diff options
Diffstat (limited to 'Help/guide/tutorial/Step10/tutorial.cxx')
| -rw-r--r-- | Help/guide/tutorial/Step10/tutorial.cxx | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/Help/guide/tutorial/Step10/tutorial.cxx b/Help/guide/tutorial/Step10/tutorial.cxx index 37a0333..b3c6a4f 100644 --- a/Help/guide/tutorial/Step10/tutorial.cxx +++ b/Help/guide/tutorial/Step10/tutorial.cxx @@ -1,11 +1,15 @@ // A simple program that computes the square root of a number +#include <cmath> #include <iostream> -#include <sstream> #include <string> -#include "MathFunctions.h" #include "TutorialConfig.h" +// should we include the MathFunctions header? +#ifdef USE_MYMATH +# include "MathFunctions.h" +#endif + int main(int argc, char* argv[]) { if (argc < 2) { @@ -19,7 +23,12 @@ int main(int argc, char* argv[]) // convert input to double const double inputValue = std::stod(argv[1]); - const double outputValue = mathfunctions::sqrt(inputValue); + // which square root function should we use? +#ifdef USE_MYMATH + const double outputValue = mysqrt(inputValue); +#else + const double outputValue = sqrt(inputValue); +#endif std::cout << "The square root of " << inputValue << " is " << outputValue << std::endl; |