Function to write out a row

src/main.c

@@ -1,6 +1,6 @@
+#include <stdio.h>
 #include "../includes/matrix.h"
 
-
 // Temporarily defined here.
 // Later, should be defined upon compilation, with -D flag (for gcc).
 #define A_OUTPUTS 3
@@ -8,6 +8,21 @@
 #define A_INPUTS  3
 #define B_INPUTS  3
 
+void PrintRow(matrix_t *matrix, size_t row) {
+  for (size_t entry = 0; entry < matrix->row_len; entry ++) {
+    size_t head_idx = *((matrix->entries_head) + (row * matrix->row_len) + entry);
+    matrix_data_t *head = matrix->data_head + head_idx;
+    size_t len = *head;
+    for (ptrdiff_t i = 1; i < len+1; i++) {
+      printf("%c", *(char*)(head + i));
+    }
+    if (entry != matrix->row_len - 1) {
+      printf(", ");
+    }
+  }
+  printf("\n");
+}
+
 int main(int argc, char *argv[])
 {
   size_t a_out = A_OUTPUTS;
@@ -17,5 +32,9 @@ int main(int argc, char *argv[])
   size_t row_len = ((a_out-1)*(b_out-1)*a_in*b_in + (a_out-1)*a_in +
       (b_out-1)*b_in);
   matrix_t matrix = ParseMatrix(row_len);
+  size_t row_count = matrix.entries_len / row_len;
+  for (size_t row = 0; row < row_count; row++) {
+    PrintRow(&matrix, row);
+  }
   return 0;
 }