Program6-Write a program to find the area of Square in PL/SQL

Method-1:
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Suppose Square have length and width of equal size .so area of Square =side*side
Input-let its  side is a
Output-Area of the Square
Operation- Square_area=a*a

Code-
SQL> set serveroutput on;
SQL> declare
  2   a  number;
  3   Begin
  4  a :=20;
  5  Dbms_output.put_line('Area of the Square='||a*a);
  6  End;
  7  /
Area of the Square=400

PL/SQL procedure successfully completed.

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Method-2:
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Input-Ask user to enter side of the square and store the result into third variable result.
Output- Area of the square
Operation- result=a*a

SQL> declare
  2   a  number;
  3  result number;
  4   Begin
  5  a :=&a;
  6  result:=a*a;
  7  Dbms_output.put_line('Area of the Square='||result);
  8  End;
  9  /
Enter value for a: 10
old   5: a :=&a;
new   5: a :=10;
Area of the Square=100

PL/SQL procedure successfully completed.