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Multiplication of integers is a fundamental mathematical operation and forms a core aspect of almost every program we write in COBOL. Whether it’s creating a multiplication table or performing bulk data operation, the multiplication functionality plays a pivotal role. Let’s delve into the method of multiplying two integers in the world of COBOL programming language.
01 NUM-A PIC 9(3) VALUE 0.
01 NUM-B PIC 9(3) VALUE 0.
01 RESULT PIC 9(4) VALUE 0.
DISPLAY “Enter first integer:”.
DISPLAY “Enter second integer:”.
MULTIPLY NUM-A BY NUM-B GIVING RESULT.
DISPLAY “Result of multiplication: “, RESULT.
Understanding the Multiplication Code
COBOL’s simplistic, English-like structure makes it easy to read and understand. In our code, we have our ‘IDENTIFICATION DIVISION’ followed by ‘PROGRAM-ID’ which is the name of our program. Then we move into the ‘DATA DIVISION’ where we define our two input variables NUM-A and NUM-B along with RESULT to store the product of multiplication.
Under ‘PROCEDURE DIVISION’ we have our main code. It begins with displaying to accept two integer values. ‘ACCEPT’ statement is used to read the input from the user. Then we perform the actual multiplication with the ‘MULTIPLY’ operation. ‘BY’ keyword is used to signify the second factor and the result of the multiplication is stored in RESULT by the ‘GIVING’ keyword. Finally, the product of multiplication is displayed.
COBOL Libraries for Performing Multiplication
COBOL does not have library support like modern languages such as Python or Java. However, it does come with an extensive set of pre-defined functionalities embedded in the language itself. The ‘MULTIPLY’ function that we used in our code is one such built-in functionality. It supports multiplying multiple numbers in a single statement too.
In situations requiring more complex mathematical computation, programmers often write their own subprograms or call system routines provided by the OS or middleware.
Similar Arithmetic Operations in COBOL
In addition to ‘MULTIPLY’, COBOL supports a host of other arithmetic operations. Here’s a brief look at them:
- ‘ADD’: for addition
- ‘SUBTRACT’: for subtraction
- ‘DIVIDE’: for division
- ‘COMPUTE’: for more complex arithmetic involving multiple operations
Each operation in COBOL is designed to be flexible and versatile. They make it easier to perform mathematical computations in a way that is highly human-readable and maintainable. Hopefully, this article provided a comprehensive understanding of how to multiply two integers in COBOL. Also, remember to keep an eye on the positioning of your keywords and function names for an enhanced SEO experience.