Also i have to use include and include also make sure -1 error! a must be in range [1-5000] from example 3 and example 1 to work as well thus it can help have more better understanding the code. i have to program in C language

Description: Tristan and Joey want to have fun and decided to play a new game using a calculator. They realized that a calculator has 10 digits (0,1,2,3,4,5,6,7,8,9) and with those digits different numbers can be formed. The name of the game is Unique Digits and the main rule is that a number cannot contain the same digit, for example 343 or 1522 are not valid numbers. The game consists of, given an interval of two numbers A,B(1