Example of Class condition:
Let the BASIC-PAY be a data name in the card record defined with picture 9(5) V99. By reading the card we can test the value of the BASIC-PAY to make certain that the data on the card is actually numeric. This can be completed as shown.
IF BASIC-PAY IS NOT NUMERIC GO TO PARA-ERROR.
If the data holds any character other than digits, then the control will be transferred to PARA-ERROR. Or else, the control will go to the next sentence in series. It may be noted that the data should be punched with the foremost zeros, if any, and not with foremost spaces. The space character is treated to be an alphabetic character.