I need a type of variable that uses however much range needed
I am making a simple typecast program that converts an integer (not the variable type) into a string but typecasted. The integer is too big to store in an int or long or double. Is there any way to make the range of the variable the_value_inputted to the_value_inputted the moment the variable is inputted. or is there any way to make a string act as a really long integer. I want to make a converter that decodes ASCII messages into strings but the integer of the ASCII Messages are reallly long. strings provide any length (or maybe a really long length) to be inputted.