There are two types of subroutine: Procedures perform a specific task but do not return a value. Functions manipulate data and return a value to the main program. A local variable is a variable ...

A procedure is a subroutine that performs a specific task. When the task is complete, the subroutine ends and the main program continues from where it left off. For example, a procedure may be ...

The program loads it at the start and after each call to the digit conversion subroutine, there is an increment to point to the next character.