Lab
Bridge Walk

In this problem a person is placed at the center of a 7 meter long bridge. Each step, the person moves 1 meter either forward or backward at random.

1. Write a program that determines how many steps the person will walk before taking a step off the bridge. Have the program average 50 trials and report the average and greatest number of steps. Your C++ program should use top-down design and functions to solve the problem.
2. Display the position of the person on the bridge at each stage of one bridge walk

For example,

```	Step 0:	 |---*---|
Step 1:	 |--*----|
Step 2:	 |-*-----|
Step 3:	 |--*----|
. . . ```

3. Print a table of bridge length vs. average number of steps taken to get off.
Use 50 trials for each bridge length and try odd lengths from 5 to 21 meters long.
For example,
```	        Length		        Average Number of Steps
5			5.6
7			7.2
9			8.0
...			...
21			37.5```
What is the relationship between the length of the bridge and the average number of steps taken to get off?

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