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.
Given a string and the task is to find the number of vowels and consonants present in the string.
Examples:
Input: str = 'Ramesh' Output: Vowels = 2, Consonants = 4 Input: str = 'Ramesh is a Geek' Output: Vowels = 6, Consonants = 7
Approach is to consider a character one by one and maintain a separate count for both vowels and consonants.
Below is the required implementation:
DECLARE -- Here variable V is varchar datatype
-- and flag variable is number datatype
-- variable c is char datatype .
v VARCHAR2(400) := 'Ramesh is a Geek' ;
noofvowels NUMBER := 0;
noofconsonants NUMBER := 0;
C CHAR ;
BEGIN FOR i IN 1..Length(v) LOOP
c := Substr(v, i, 1);
-- Check if the current character is vowel
IF c IN ( 'A' , 'E' , 'I' , 'O' , 'U' )
OR c IN ( 'a' , 'e' , 'i' , 'o' , 'u' ) THEN noofvowels := noofvowels + 1;
-- Else current character is a consonant except space
ELSE IF c NOT IN ( ' ' ) THEN noofconsonants := noofconsonants + 1;
END IF;
END IF;
END LOOP;
dbms_output.Put_line( 'No. of Vowels: ' || noofvowels);
dbms_output.Put_line( 'No. of Consonants: ' || noofconsonants);
END ;
-- Program End |
Output :
No. of Vowels: 6 No. of Consonants: 7
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