bug fix in create matrix

matrix.c

@@ -14,8 +14,11 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
  
     if(rows == 0 || cols == 0)
     {
-        printf("Error");
-        exit(EXIT_FAILURE);
+        
+        m.rows = 0;
+        m.cols = 0;
+        m.buffer = NULL;
+        return m;
     }
  
     m.buffer = calloc(rows * cols, sizeof(MatrixType));