Example 2: Accumulation Of Fields

A sales file contains monthly sales figures in real fields SAL01 to SAL12.

Generate a virtual field called SALYR to contain the total yearly sales and a virtual field called SALAV to contain the average monthly sales.

Also generate 4 virtual fields called SALQ1 -> SALQ4 to contain total quarterly sales.

Step 1 - Define the Virtual Fields

 

Step 2 - Input RPG Section "Calculations After Input from File"

>

C*

C* VC_USING FIELDS(SAL01 SAL02 SAL03 SAL04 SAL05 SAL06 SAL07 

C*                 SAL08 SAL09 SAL10 SAL11 SAL12 SALYR)

C*

C* Calculate yearly sales

C*

C                     Z-ADDSAL01     SALYR

C                     ADD  SAL02     SALYR

C                     ADD  SAL03     SALYR

C                     ADD  SAL04     SALYR

C                     ADD  SAL05     SALYR

C                     ADD  SAL06     SALYR

C                     ADD  SAL07     SALYR

C                     ADD  SAL08     SALYR

C                     ADD  SAL09     SALYR

C                     ADD  SAL10     SALYR

C                     ADD  SAL11     SALYR

C                     ADD  SAL12     SALYR

C*

C* VC_USING FIELDS(SALYR SALAV)

C*

C* Calculate average monthly sales

C*

C           SALYR     DIV  12        SALAV

C*

C* VC_USING FIELDS(SAL01 SAL02 SAL03 SALQ1)

C*

C* Calculate first quarter sales

C*

C                     Z-ADDSAL01     SALQ1

C                     ADD  SAL02     SALQ1

C                     ADD  SAL03     SALQ1

C*

C* VC_USING FIELDS(SAL04 SAL05 SAL06 SALQ2)

C*

C* Calculate second quarter sales

C*

C                     Z-ADDSAL04     SALQ2

C                     ADD  SAL05     SALQ2

C                     ADD  SAL06     SALQ2

C*

C* VC_USING FIELDS(SAL07 SAL08 SAL09 SALQ3)

C*

C* Calculate third quarter sales

C*

C                     Z-ADDSAL07     SALQ3

C                     ADD  SAL08     SALQ3

C                     ADD  SAL09     SALQ3

C*

C* VC_USING FIELDS(SAL10 SAL11 SAL12 SALQ4)

C*

C* Calculate fourth quarter sales

C*

C                     Z-ADDSAL10     SALQ4

C                     ADD  SAL11     SALQ4

C                     ADD  SAL12     SALQ4

Note the use of multiple VC_USING commands in the source code. A VC_USING command remains in effect until another VC_USING is encountered or the end of the code section is encountered.