Tutorial page 4: add some text, diversify examples.

Use \verbinclude for output text to disable syntax highlighting.
Give tables consistent look.

1 files changed, 12 insertions, 8 deletions

diff --git a/doc/examples/Tutorial_BlockOperations_print_block.cpp b/doc/examples/Tutorial_BlockOperations_print_block.cpp
index a2d0db864..0fdefecdf 100644
--- a/doc/examples/Tutorial_BlockOperations_print_block.cpp
+++ b/doc/examples/Tutorial_BlockOperations_print_block.cpp
@@ -1,14 +1,18 @@
 #include <Eigen/Dense>
 #include <iostream>
-using namespace Eigen;
 
 int main()
 {
-  MatrixXf m(3,3);
-  
-  m << 1,2,3,
-       4,5,6,
-       7,8,9;
-     
-  std::cout << m.block(0,0,2,2) << std::endl;
+  Eigen::MatrixXf m(4,4);
+  m <<  1, 2, 3, 4,
+        5, 6, 7, 8,
+        9,10,11,12,
+       13,14,15,16;
+  std::cout << "Block in the middle" << std::endl;
+  std::cout << m.block<2,2>(1,1) << std::endl << std::endl;
+  for (int i = 1; i < 4; ++i) 
+  {
+    std::cout << "Block of size " << i << std::endl;
+    std::cout << m.block(0,0,i,i) << std::endl << std::endl;
+  }
 }