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-rw-r--r--Help/guide/tutorial/Complete/MathFunctions/MakeTable.cxx25
1 files changed, 25 insertions, 0 deletions
diff --git a/Help/guide/tutorial/Complete/MathFunctions/MakeTable.cxx b/Help/guide/tutorial/Complete/MathFunctions/MakeTable.cxx
new file mode 100644
index 000000000..ee585568c
--- /dev/null
+++ b/Help/guide/tutorial/Complete/MathFunctions/MakeTable.cxx
@@ -0,0 +1,25 @@
+// 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
+}