Fix trivial warnings.

2 files changed, 3 insertions, 1 deletions

diff --git a/doc/special_examples/Tutorial_sparse_example.cpp b/doc/special_examples/Tutorial_sparse_example.cpp
index 002f19f01..830e196ea 100644
--- a/doc/special_examples/Tutorial_sparse_example.cpp
+++ b/doc/special_examples/Tutorial_sparse_example.cpp
@@ -9,6 +9,8 @@ void saveAsBitmap(const Eigen::VectorXd& x, int n, const char* filename);
 
 int main(int argc, char** argv)
 {
+  assert(argc==2);
+  
   int n = 300;  // size of the image
   int m = n*n;  // number of unknows (=number of pixels)
 
diff --git a/doc/special_examples/Tutorial_sparse_example_details.cpp b/doc/special_examples/Tutorial_sparse_example_details.cpp
index 7d820b44a..bc18b0188 100644
--- a/doc/special_examples/Tutorial_sparse_example_details.cpp
+++ b/doc/special_examples/Tutorial_sparse_example_details.cpp
@@ -8,7 +8,7 @@ typedef Eigen::Triplet<double> T;
 void insertCoefficient(int id, int i, int j, double w, std::vector<T>& coeffs,
                        Eigen::VectorXd& b, const Eigen::VectorXd& boundary)
 {
-  int n = boundary.size();
+  int n = int(boundary.size());
   int id1 = i+j*n;
 
         if(i==-1 || i==n) b(id) -= w * boundary(j); // constrained coefficient