You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
904 B
37 lines
904 B
// A simple program that computes the square root of a number
|
|
#include <cmath>
|
|
#include <iostream>
|
|
#include <string>
|
|
|
|
#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) {
|
|
// report version
|
|
std::cout << argv[0] << " Version " << Tutorial_VERSION_MAJOR << "."
|
|
<< Tutorial_VERSION_MINOR << std::endl;
|
|
std::cout << "Usage: " << argv[0] << " number" << std::endl;
|
|
return 1;
|
|
}
|
|
|
|
// convert input to double
|
|
const double inputValue = std::stod(argv[1]);
|
|
|
|
// 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;
|
|
return 0;
|
|
}
|