Page 283 - ComputerScience_Class_11

SumAverage obj = new SumAverage();
obj.calculate(10, 20);
}
}
2. class Factor {
void factor_num() {
int num;
for(i=1; i<=num; i++) {
if(num%i==0)
System.out.println(i);
}
}
void main(String args[]) {
factor_num();
}
}
Ans. import java.util.*;
class Factor {
void factor_num() {
Scanner sc = new Scanner(System.in);
System.out.print("Enter a number: ");
int num = sc.nextInt();
for(int i = 1; i <= num; i++) {
if(num % i == 0)
System.out.println(i);
}
sc.close();
}
public static void main(String[] args) {
Factor obj = new Factor();
obj.factor_num();
}
}
3. class Circle {
void area(double r) {
double a = 3.142 * r * r;
System.out.println("Area:" + ar);
}
}
Ans. class Circle {
void area(double r) {
double a = 3.142 * r * r;
System.out.println("Area: " + a); // Correct variable
}
public static void main(String[] args) {
Circle c = new Circle();
c.area(5.5);
}
}

Methods and Constructors 281