CMake/Tests/Tutorial/Step4/tutorial.cxx

39 lines
769 B
C++
Raw Normal View History

2005-11-10 18:50:45 +03:00
// A simple program that computes the square root of a number
#include <stdio.h>
2005-11-10 23:13:54 +03:00
#include <stdlib.h>
2005-11-10 18:50:45 +03:00
#include <math.h>
#include "TutorialConfig.h"
#ifdef USE_MYMATH
#include "MathFunctions.h"
#endif
int main (int argc, char *argv[])
{
if (argc < 2)
{
fprintf(stdout,"%s Version %d.%d\n",
argv[0],
Tutorial_VERSION_MAJOR,
Tutorial_VERSION_MINOR);
fprintf(stdout,"Usage: %s number\n",argv[0]);
return 1;
}
double inputValue = atof(argv[1]);
double outputValue = 0;
2005-11-10 18:50:45 +03:00
if(inputValue >= 0)
{
2005-11-10 18:50:45 +03:00
#ifdef USE_MYMATH
outputValue = mysqrt(inputValue);
2005-11-10 18:50:45 +03:00
#else
outputValue = sqrt(inputValue);
2005-11-10 18:50:45 +03:00
#endif
}
2005-11-10 18:50:45 +03:00
fprintf(stdout,"The square root of %g is %g\n",
inputValue, outputValue);
return 0;
}