tail recursive program

A tail recursive program is a type of computer program that can keep track of all the steps it has taken. It starts with a single step and then remembers each step it takes. It is like a snake, starting from one point, and then following its own tail until it reaches the end. Instead of storing all the steps in memory like other programs, a tail recursive program only stores the final step. This means that it takes up less memory space. It also makes it easier for the program to go back and check its previous steps, so it can make sure that everything it has done is correct.