Coding Club

Eagle Ridge Middle School

Akash Pamal

Session 4 - Nov 2nd

Today’s Talk

• Control Statement - If and if/else
• Practice Problems

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Positive / Negative Check

• Complete last week’s program that prints positive or negative number
• Check for zero (0) as the input
• Program is available here (link on Coding Club website)
• https://docs.google.com/document/d/1eplVEQGwNXeh4Z58BAN_ieSSunuRqBiizLSFbGO_CS8/edit?usp=sharing

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Control Statement - if

if (boolean expression) {� System.out.println("This line is printed if the boolean expression is true");�}

Control Statement - if

int a = 10;

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if (a > 0) {� System.out.println("This line is printed if the boolean expression is true");�}

Control Statement - if / else

if (boolean expression) {� System.out.println("This line is printed if the boolean expression is true");�} else {

System.out.println("This line is printed if the boolean expression is false");

}

Control Statement - if / else

int a = 20;

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if (a < 0) {� System.out.println("This line is printed if the boolean expression is true");�} else {

System.out.println("This line is printed if the boolean expression is false");

}

Reading Input

import java.util.scanner;

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Scanner sc = new Scanner();

int i = sc.nextInt();

Program

• Write a program to take an input from user and print if the number is positive or negative number

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import java.util.scanner;

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Scanner sc = new Scanner(System.in);

int i = sc.nextInt();

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Program

import java.util.scanner;

Public class positiveCheck{

public static void main (String [] args){

Scanner sc = new Scanner(System.in);

int i = sc.nextInt();

System.out.println(i);

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}

}

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Advanced Problems

• Given 2 int values, return whichever value is nearest to the value 10, or return 0 in the event of a tie. Note that Math.abs(n) returns the absolute value of a number

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public int close10(int a, int b) {

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}

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Thank You