Flowcharts and Conditional Statments

Question 1

What is the Euclids Algorithm?

Answer 1

• First Algorithm
• Computes HCF

Question 2

What is conditional statments?

Answer 2

• Used to selectively run different sections of program code
• Depending on a condition
  
  • If file opener button clicked
  • Then open file explorer

Question 3

How do you use if statments in java

Answer 3

```java
class Main {

public static void main(String[]args){

int special_number = 90;

	if (special_number == 90) {
		System.out.println('HIIIII')
	}
	else {
		System.out.print('GOHOME')
	}

}
}
~~~

Question 4

How do you use switch statments

Answer 4

```java
class Main {

public static void main(String[]args){

int day = 5;

switch(day) {
  case 1:
    System.out.println("Monday");
    break;
  case 2:
    System.out.println("Tuesday");
    break;
  case 3:
    System.out.println("Wednesday");
    break;
  case 4:
    System.out.println("Thursday");
    break;
  case 5:
    System.out.println("Friday");
    break;
  case 6:
    System.out.println("Saturday");
    break;
  case 7:
    System.out.println("Sunday");
    break;
  default:
    System.out.println("Invalid day");
    break;
}

}
}

~~~

Question 5

What is the ?: notation and how do you use it?

Answer 5

• ? = if .. then
• : = x or y based on ?
  ```java
  class Main {public static void main(String[] args) {

    int age = 18;
    String message = (age >= 18) ? "You are an adult" : "You are not an adult";
    System.out.println(message);

  }

}
~~~

Question 6

What is a condition and what is the syntax for all the conditions?

Answer 6

• A test which uses relational operators
• To compare two items
• Never compare a constant with a constant as constants never change

Question 7

What are compound conditions?

Answer 7

• Consists of more than one term
• Consists of normal relations joined together into an expression using the logic concepts AND and OR

```java
AND == &&
OR == ||
NOT == !
~~~