| // A simple program that builds a sqrt table |
| #include <cmath> |
| #include <fstream> |
| #include <iostream> |
| |
| int main(int argc, char* argv[]) |
| { |
| // make sure we have enough arguments |
| if (argc < 2) { |
| return 1; |
| } |
| |
| std::ofstream fout(argv[1], std::ios_base::out); |
| const bool fileOpen = fout.is_open(); |
| if (fileOpen) { |
| fout << "double sqrtTable[] = {" << std::endl; |
| for (int i = 0; i < 10; ++i) { |
| fout << sqrt(static_cast<double>(i)) << "," << std::endl; |
| } |
| // close the table with a zero |
| fout << "0};" << std::endl; |
| fout.close(); |
| } |
| return fileOpen ? 0 : 1; // return 0 if wrote the file |
| } |
