PL/SQL Control Statement Exercises: Show the uses of nested loop

PL/SQL Control Statement: Exercise-18 with Solution

Write a program in PL/SQL to show the uses of nested loop.

Sample Solution:

PL/SQL Code:

DECLARE
  m  PLS_INTEGER := 0;
  n  PLS_INTEGER := 0;
  k  PLS_INTEGER;
BEGIN
  <>
  LOOP
    n := n + 1;
    k := 0;
DBMS_OUTPUT.PUT_LINE ('The values of inner loop are: ');	
    <>
    LOOP
      k := k + 1;
      m := m + n * k; -- Sum several products
  
      EXIT inner_loop WHEN (k > 3);
DBMS_OUTPUT.PUT_LINE ('n='||TO_CHAR(n)||'  k='||TO_CHAR(k)||'  m='||TO_CHAR(m));		  
      EXIT outer_loop WHEN ((n * k) > 6);
    END LOOP inner_loop;
  END LOOP outer_loop;
  DBMS_OUTPUT.PUT_LINE
    ('The total sum after completing the process is: ' || TO_CHAR(m));
END;
/

Flowchart:

Sample Output:

SQL> /
The values of inner loop are:
n=1  k=1  m=1
n=1  k=2  m=3
n=1  k=3  m=6
The values of inner loop are:
n=2  k=1  m=12
n=2  k=2  m=16
n=2  k=3  m=22
The values of inner loop are:
n=3  k=1  m=33
n=3  k=2  m=39
n=3  k=3  m=48
The total sum after completing the process is: 48

PL/SQL procedure successfully completed.

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