Factorial of a number in PL/SQL
Prerequisite – PL/SQL introduction
In PL/SQL code groups of commands are arranged within a block. A block group related declarations or statements.
In declare part, we declare variables and between begin and end part, we perform the operations.
Here, first, we take three variables num, fact, and temp and assign the value in num variable (i.e which number factorial we want).
And then after we assign fact variable to 1.
Examples:
Input : 4 Output : 24
Input : 6 Output : 720
Below is the required implementation:
declare -- declare variable num , fact -- and temp of datatype number num number := 6; fact number := 1; temp number; begin temp :=num; -- here we check condition -- with the help of while loop while( temp>0 ) loop fact := fact*temp; temp := temp-1; end loop; dbms_output.put_line('factorial of '|| num || ' is ' || fact); end; -- Program End |
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Output :
factorial of 6 is 720.
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