Update examples (#9)

Author: BenBrock

examples/mtx2bsp.c

@@ -70,8 +70,8 @@ int main(int argc, char** argv) {
     compression_level = atoi(argv[4]);
   }
 
-  char* input_file_extension = bsp_get_file_extension(input_fname);
-  char* output_file_extension = bsp_get_file_extension(output_fname);
+  const char* input_file_extension = bsp_get_file_extension(input_fname);
+  const char* output_file_extension = bsp_get_file_extension(output_fname);
 
   if (input_file_extension == NULL ||
       strcmp(input_file_extension, ".mtx") != 0) {

examples/simple_matrix_read.c

@@ -1,14 +1,14 @@
 #include <binsparse/binsparse.h>
 
 int main(int argc, char** argv) {
-  char* file_name = "test.hdf5";
+  const char* file_name = "test.hdf5";
 
   bsp_matrix_t mat = bsp_read_matrix(file_name, NULL);
 
   if (mat.format == BSP_COO) {
-    float* values = mat.values.data;
-    int* rowind = mat.indices_0.data;
-    int* colind = mat.indices_1.data;
+    float* values = (float*) mat.values.data;
+    int* rowind = (int*) mat.indices_0.data;
+    int* colind = (int*) mat.indices_1.data;
 
     for (size_t i = 0; i < mat.nnz; i++) {
       printf("%d, %d: %f\n", rowind[i], colind[i], values[i]);

examples/simple_matrix_write.c

@@ -7,9 +7,9 @@ int main(int argc, char** argv) {
 
   bsp_matrix_t mat = bsp_generate_coo(m, n, nnz, BSP_FLOAT32, BSP_INT32);
 
-  float* values = mat.values.data;
-  int* rowind = mat.indices_0.data;
-  int* colind = mat.indices_1.data;
+  float* values = (float*) mat.values.data;
+  int* rowind = (int*) mat.indices_0.data;
+  int* colind = (int*) mat.indices_1.data;
 
   for (size_t i = 0; i < nnz; i++) {
     printf("%d, %d: %f\n", rowind[i], colind[i], values[i]);

examples/simple_read.c

@@ -7,7 +7,7 @@ int main(int argc, char** argv) {
 
   bsp_array_t array = bsp_read_array(f, "test");
 
-  int* values = array.data;
+  int* values = (int*) array.data;
 
   for (size_t i = 0; i < array.size; i++) {
     printf("%lu: %d\n", i, values[i]);

examples/simple_write.c

@@ -1,13 +1,13 @@
 #include <binsparse/binsparse.h>
 
 int main(int argc, char** argv) {
-  char* file_name = "test.hdf5";
+  const char* file_name = "test.hdf5";
 
   hid_t f = H5Fcreate(file_name, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
 
   bsp_array_t array = bsp_construct_array_t(1000, BSP_INT32);
 
-  int* values = array.data;
+  int* values = (int*) array.data;
 
   for (size_t i = 0; i < array.size; i++) {
     bsp_array_write(array, i, i);