1 files changed, 14 insertions, 21 deletions
diff --git a/Tests/Tutorial/Step7/MathFunctions/MakeTable.cxx b/Tests/Tutorial/Step7/MathFunctions/MakeTable.cxx
index cebd50f..ee58556 100644
--- a/Tests/Tutorial/Step7/MathFunctions/MakeTable.cxx
+++ b/Tests/Tutorial/Step7/MathFunctions/MakeTable.cxx
@@ -1,32 +1,25 @@
 // A simple program that builds a sqrt table
-#include <math.h>
-#include <stdio.h>
+#include <cmath>
+#include <fstream>
+#include <iostream>
 
 int main(int argc, char* argv[])
 {
-  int i;
-  double result;
-
   // make sure we have enough arguments
   if (argc < 2) {
     return 1;
   }
 
-  // open the output file
-  FILE* fout = fopen(argv[1], "w");
-  if (!fout) {
-    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();
   }
-
-  // create a source file with a table of square roots
-  fprintf(fout, "double sqrtTable[] = {\n");
-  for (i = 0; i < 10; ++i) {
-    result = sqrt(static_cast<double>(i));
-    fprintf(fout, "%g,\n", result);
-  }
-
-  // close the table with a zero
-  fprintf(fout, "0};\n");
-  fclose(fout);
-  return 0;
+  return fileOpen ? 0 : 1; // return 0 if wrote the file
 }