program test use ieee_arithmetic, only: ieee_value, ieee_quiet_nan real(8) :: x1(5) real(8), allocatable :: x2(:) allocate(x2(5)) x1(1) = ieee_value(0d0, ieee_quiet_nan) x2(1) = ieee_value(0d0, ieee_quiet_nan) print *, x1(2:5) print *, x2(2:5) end program In the program above, x1(2:…

It is a different question. I am uncertain whether assigning value to one element of an allocatable array will make the other elements defined as zeros.

Just use sourced allocation to initialize arrays to zero and don’t worry about it. allocate(x2(5), SOURCE=0.0d0)

Allocatable array defined or not

Help

ivanpribec June 12, 2022, 6:25pm 2

I don’t see any fundamental difference from your previous question: Undefined variables

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Allocatable array defined or not

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