CMakeLua/Tests/Tutorial/Step6/MathFunctions/MakeTable.cxx

   1 // A simple program that builds a sqrt table
   2 #include <stdio.h>
   3 #include <math.h>
   4
   5 int main (int argc, char *argv[])
   6 {
   7   int i;
   8   double result;
   9
  10   // make sure we have enough arguments
  11   if (argc < 2)
  12     {
  13     return 1;
  14     }
  15
  16   // open the output file
  17   FILE *fout = fopen(argv[1],"w");
  18   if (!fout)
  19     {
  20     return 1;
  21     }
  22
  23   // crate a source file with a table of square roots
  24   fprintf(fout,"double sqrtTable[] = {\n");
  25   for (i = 0; i < 10; ++i)
  26     {
  27     result = sqrt(static_cast<double>(i));
  28     fprintf(fout,"%g,\n",result);
  29     }
  30
  31   // close the table with a zero
  32   fprintf(fout,"0};\n");
  33   fclose(fout);
  34   return 0;
  35 }