Download LAB 9

Computer Programming
Lab 9
Exercise 1
Source Code
package excercise1;
import java.util.Scanner;
public class Excercise1 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int sumOfPositive=0;
int sumOfNegative=0,sum=0;
double count=0;
System.out.print( "Enter an integer, the input ends with 0:");
int number=input.nextInt();
if (number==0)
System.out.println( "No numbers entered except 0 " );
else{
while(number!=0)
{ count++;
sum+=number;
if(number>0)
sumOfPositive++;
else
sumOfNegative++;
number=input.nextInt();
}
System.out.println( "The number of positives is " + sumOfPositive);
System.out.println( "The number of negatives is " + sumOfNegative);
System.out.println( "The total is " +sum);
System.out.println( "The average is " +sum/count); }
}
}
Exercise 2
Source Code
package javaapplication4;
import java.util.Scanner;
public class JavaApplication4 {
public static void main(String[ ] args) {
Scanner input = new Scanner(System.in);
System.out.print( "Enter positive integer greater than or equal 2: " );
int number= input.nextInt();
System.out.println( "The factors of “ +number+ " are :" );
int factor=2;
do{
if(number%factor==0) {
System.out.printf( "%d, " ,factor);
number/=factor; }
else
factor++;
}while(factor<=number); }}
Exercise 3
Source Code :
package exercise3;
import java.util.Scanner;
public class Exercise3 {
public static void main(String[] args) {
Scanner input=new Scanner (System.in);
System.out.print( "Enter the number of students: " );
int numOfStudent= input.nextInt();
System.out.print( "Enter student first name only: " );
String student1= input.next();
System.out.print( "Enter a student score: " );
double score1= input.nextDouble();
for(int i=0 ; i<numOfStudent-1 ; i++)
{
System.out.print( "Enter student first name only: " );
String student= input.next();
System.out.print( "Enter a student score: " );
double score= input.nextDouble();
if(score>score1)
{
student1=student;
score1=score;
}
}
}
System.out.println( "Top student " +student1+" 's score is " +score1);
}