Problem:

A program uses the SPZERO compiler directive.

The directive causes space characters in numeric data items to be treated as zeroes.

While performing the STRING operation on a string and a numeric data item and displaying the result, outputs spaces rather than zeroes for the numeric data item.

Resolution:

The SPZERO directive treats spaces or undefined numeric data items as zeroes, 'internally'.

This allows the data item to be used in IF statements, MOVEs and calculations.  Perform  a literal move to the data item to be able to STRING and DISPLAY the zeroes.

MOVE zeroes TO ws-num.

DISPLAY ws-num.