Write a program in C to simulate backward and forward functionality just like a web browser. Your program should have at least two functions, backward() and forward().

For example, the user enters two string such as Test1 and Test2.

1) Case one: If the user selects backward, Test2 will be printed.

Then if the user selects backward again, Test1 will be printed.

Then if the user selects backward a third time, a message such as empty" will be printed.

2) Case two: If the user selects backward, Test2 will be printed.

Then if the user selects forward, Test2 will be printed.

3) Case three: If the user selects backward, Test2 will be printed.

Then if the user selects backward again, Test1 will be printed.

Then if the user selects forward, Test1 will be printed.