*PROGRAM TO FIND OUT THE FACTORIAL OF A GIVEN NUMBER.

       IDENTIFICATION DIVISION.
       PROGRAM-ID. FACT.
       AUTHOR. KRISHNA KUMAR KHATRI.
       DATE-WRITTEN. 24TH MAY, 2003.

       ENVIRONMENT DIVISION.
       CONFIGURATION SECTION.

       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  NUM              PIC 99 VALUE ZERO USAGE COMPUTATIONAL.
       01  RES              PIC 9999999 USAGE COMPUTATIONAL.
       01  CHOICE           PIC A.

       PROCEDURE DIVISION.
       MAIN-LOGIC.
           DISPLAY "PROGRAM TO CALCULATE THE FACTORIAL OF A NUMBER"
           MOVE 1 TO RES.
           PERFORM READ-NUM-DISP THRU CONT-PARA.
           PERFORM READ-NUM-DISP THRU CONT-PARA
              UNTIL CHOICE EQUAL TO "N".
           STOP RUN.

       READ-NUM-DISP.
           DISPLAY " ".
           DISPLAY "ENTER THE NUMBER".
           ACCEPT NUM.
           IF NUM IS GREATER THAN 10 GO TO CONT-PARA.
           PERFORM CAL-FACT
              UNTIL NUM EQUAL TO 1.
           DISPLAY "THE FACTORIAL OF THIS NUMBER IS"
           DISPLAY RES.
           DISPLAY " ".

       CONT-PARA.
           DISPLAY "WOULD YOU LIKE TO CONTINUE (Y/N)".
           ACCEPT CHOICE.
           MOVE 1 TO RES.

       CAL-FACT.
           MULTIPLY NUM BY RES GIVING RES.
           SUBTRACT 1 FROM NUM GIVING NUM.
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