Calling variables from subroutines

[manueleo]

Hi,

I have fortran program, which has many subroutines. If one of these subroutines, functionB, gets a array variable, called A, from the calling function, functionA, does array A have to be assigned some value before being referenced by functionB? In order words, array A is allocated, but it is not assign to any value. If it has no value, is it possible to make array A as one of the arguments of function B?

Thank you.

 

[xwb]

Have to break up your question

1) If one of these subroutines, functionB, gets a array variable, called A, from the calling function, functionA, does array A have to be assigned some value before being referenced by functionB?
No

2) In order words, array A is allocated, but it is not assign to any value. If it has no value, is it possible to make array A as one of the arguments of function B?
Yes