Assignment 13: Fix cast in average division

Assignment-13/README.md

@@ -32,5 +32,5 @@ Enter scoring total for Player #2: 15
 Enter scoring total for Player #3: 17
 Enter scoring total for Player #4: 21
 Enter scoring total for Player #5: 24
-Player #5 had the highest scoring average at 19.00 points per game.
+Player #5 had the highest scoring average at 19.75 points per game.
 ```

Assignment-13/assignment13.c

@@ -61,9 +61,8 @@ int main(void)
 
 	//initialize a new float variable which will be our average
 	//use the (float) operator to change the integer variable being divided into a float operation
-	float ppg = (float)(highest_total / 4);
+	float ppg = highest_total / 4.0f;
 	printf("Player #%d had the highest scoring average at %.2f points per game.\n", player_id, ppg);
 
 	return 0;
-
 }