‫العملى‬
Write a program takes two numbers from user to calculate
power.
Ex:First number 5
Second number 3
Result is 5*5*5 = 125
Output is power is 125
Scanner user=new Scanner(System.in);
System.out.println("base: ");
int bas=user.nextInt();
System.out.println("power: ");
int power=user.nextInt();
int x=1;
for(int i=1;i<=power;i++){
x*=bas;
}
System.out.println("power= "+x);
}
Write a program takes number from user to calculate
factorial.
Ex:Number 5
Result is 5*4*3*2*1 = 120
Output is factorial for number 5 is 120
Scanner user=new Scanner(System.in);
System.out.println("base: ");
int fact=user.nextInt();
int x=1;
for(int i=1;i<=fact;i++){
x*=i;
}
System.out.println("power= "+x);
}
Write a program to find sum of all odd numbers between 1 to 20.
int x=0;
for(int i=1;i<=20;i++){
if(i%2!=0){
x+=i;
System.out.println(i);
}
}
System.out.println("sum= "+x);
}
Write a program to find sum of all even number between 1 to 20
int x=0;
for(int i=1;i<=20;i++){
if(i%2==0){
x+=i;
System.out.println(i);
}
}
System.out.println("sum= "+x);
}
Write a PL/SQL block:
To find the number of airports from the countries table for a supplied
country_name. Based on this number, display a customized message as
follows:
# Airports
Message
0–100
There are 100 or fewer airports.
101–1,000
1001–1,0000
There are between 101 and 1,000
airports.
There are between 1,001 and 10,000
airports.
> 10,000
There are more than 10,000 airports.
No value in
database
The number of airports is not
available for this country.
DECLARE
v_country_name wf_countries.country_name%TYPE;
v_airports wf_countries.airports%TYPE;
v_string VARCHAR2(60);
BEGIN
SELECT airports INTO v_airports
FROM wf_countries
WHERE country_name = v_country_name;
v_string :=
CASE
WHEN v_airports < 101 THEN 'There are 100 or fewer airports.'
WHEN v_airports < 1001 THEN 'There are between 101 and 1,000 airports'
WHEN v_airports < 10001 THEN 'There are between 1,001 and 10,000 airports'
WHEN v_airports > 10000 THEN 'There are more than 10,000 airports.'
ELSE 'The number of airports is not available for this country.'
END;
DBMS_OUTPUT.PUT_LINE(v_string);
END;
Write PLSQL code that takes the grade of student and return
message shows the GPA of this student.
When grade is greater than 90 >> GPA is A
When grade between 75 and 90 >> GPA is B
When grade between 65 and 75 >> GPA is C
When grade between 50 and 65 >> GPA is D
When grade is less than 50 >> Failed
DECLARE
;)20(v_grade varchar2
BEGIN
SELECT grade INTO v_grade
FROM students
;WHERE student_id = v_stundent_id
=: v_grade
CASE
'WHEN v_grade >90 THEN 'Gpa is A
'WHEN v_grade between 75 and 90 THEN 'Gpa B
'WHEN v_grade between 65 and 74 THEN 'Gpa C
'WHEN v_grade between 55 and 64 THEN 'Gpa D
'ELSE 'faild
;END
;DBMS_OUTPUT.PUT_LINE(v_grade)
;END
use the jobs table. Create a PL/SQL block that fetches and displays
the six jobs with the highest salary. For each of these jobs, display the
job_id, job_title, min_salary, and max_salary.
DECLARE
CURSOR jobs_cursor IS
SELECT *
FROM jobs
ORDER BY Max_salary desc;
v_job jobs_cursor%ROWTYPE;
BEGIN
OPEN jobs_cursor;
LOOP
FETCH jobs_cursor INTO v_job;
EXIT WHEN jobs_cursor%ROWCOUNT > 6;
DBMS_OUTPUT.PUT_LINE(v_job.job_id || ' ' || v_job.job_title
|| ' ' || v_job.min_salary || ' ' || v_job.max_salary );
END LOOP;
CLOSE jobs_cursor;
END;
Write a PL/SQL block to display the country_id and country_name
values from the COUNTRIES table for country_id whose values
range from 1 through 3. Use a basic loop. Increment a variable from
1 through 3. Use an IF statement to test your variable and EXIT the
loop after you have displayed the first 3 countries.
DECLARE
v_id countries.country_id%TYPE:=1;
v_country_name countries.country_name%TYPE;
BEGIN
LOOP
SELECT country_name INTO v_country_name FROM
countries
WHERE country_id=v_id;
DBMS_OUTPUT.PUT_LINE('Country id: '||v_id||
' Country name: '||v_country_name);
v_id:=v_id+1;
if v_id>3 THEN EXIT;
END IF;
END LOOP;
END;
‫خطوات عمل ال‬cursor
‫وضح الفرق بين‬procedure & function
‫انواع‬parameters in procedure
‫وضح انواع‬exception
While(pre test) & do While(post test)
‫ما هو‬trigger