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  COBOL TUTORIAL FOR BCA STUDENTS OF M G UNIVERSITY  
  UNIT 4: PROCEDURE DIVISION . . .  
   
     
  SUBTRACT VERB  
 

This verb is used to subtract one, or the sum of two or more numbers from one or more numbers and to store the result.

The form of the SUBTRACT verb is as follows:

 
 


 
 

Examples:

  
 

SUBTRACT A FROM B.

 
 

This statement means that the value of A will be subtracted from the value of B and the subtracted result will be stored in B. The decimal point alignment will be done automatically.
 
 

SUBTRACT A, B FROM C.

  
 

This one shows that the value of B and A will be added and the resultant sum will be subtracted from the value of C. After subtraction, the final result will be stored in C. The old value of C will be lost.

  
 

SUBTRACT A, B FROM C GIVING D.

  
 

This indicates that the summation of the value of A and B will be subtracted from the value of C and the final result will be stored in D. The old value of D will be lost whereas in this case C retains the old value.

  
  SUBTRACT 15 FROM A B.  
 
Here the number 15 will be subtracted from the values of A and B. A and B will receive these new values.

  
 

As in the case of the ADD statement, here also the last-named operand must not be a literal as the final result will be stored there. If the GIVING option is used, identifier-3, identifier-4 etc. can also be numeric literals.

For example:

SUBTRACT A B FROM 50 GIVING C.