Question

How do subroutines hwlp in program writing?

Answer 1

Functions and
Subroutines
Functions and subroutines
are FORTRAN's
subprograms. Most
problems that require a computer program to
solve them are too complex to sit down and
work all the way through them in one go.
Using subprograms allows you to tackle bite
size pieces of a problem individually. Once
each piece is working correctly you then put
the pieces together to create the whole
solution. To implement functions and
subroutines,

Answer 2

A subroutine may be written so that it expects to obtain one or more data values from the calling program (to replace its parameters or formal parameters). The calling program provides actual values for these parameters, called arguments.