PROGRAM FOR SUBTRACT VERB:

We have to write a simple program to elaborate the SUBTRACT verb. You can also use edit characters in the program.

Identification division.

Program- id. Subverb.

Environment division.

Data division.

Working-storage section.

77  a  pic   s9(3)v9(2) value 0.

77  b  pic    s9(3)v9(2) value 0.

77  e-b pic  +z(3).z(2).

Procedure division.

Para-1.

  Display(1 1) erase.

   Display(3 5) "Enter first number :".

  Accept a.

  Display(5 5) "Enter second number :".

  Accept b.

  Subtract a  from b.

  Move b to e-b.

  Display(15 5) "b-a = " e-b.

  Stop run.

Description:   This program gets 2 inputs from the user.

                      It subtracts them by using the SUBTRACT verb. 

                      b-a is computed and stored in b.

                      Afterward the execution: OLD value of a is similar

                                                             OLD value of b is lost and

                                                             b-a is stored in b.

                     The unedited result is available in the b.

                     We move b to e-b, where the edit characters are available.

                     Note that the variable e-b makes proper use of the + edit character.

                       The e-b will always be exhibited with result.