Preheat oven to 350° F.
Sift together the flour, salt, and baking soda into a mixing bowl.
In another mixing bowl, beat the eggs.
Stir in the sugar and vanilla. Mix well.
Add the entire can of fruit cocktail, with the juice. Stir well until sugar dissolves.
Add the wet ingredients to the dry ingredients. Mix together until well combined.
Pour the batter into a greased/sprayed 9"x13" baking dish.
Mix together the coconut and brown sugar. Sprinkle over the cake batter.
Bake at 350° F 30 to 40 minutes, or until a toothpick inserted into the center of the cake comes out clean.