Ch1_PracticeSet.java

import java.util.Scanner;
public class Ch1_PracticeSet{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);	
		// Question 1: Write a program to Sum three number.

		// int a = 3, b = 2, c = 5,sum;
		// sum = a + b + c;
		// System.out.println(sum);

		// Question 2: Write a program to calculate cgpa using  marks of three subjects(out of 100). 

		// float Subject1 = 45;
		// float Subject2 = 95;
		// float Subject3 = 48;	
		// float totalmarks = Subject1 + Subject2 + Subject3;
		// float average = totalmarks/300*100;
		// float Cgpa = average/10;

		// Another Method:
		// float Cgpa = totalmarks/30;
		// System.out.println(average);
		// System.out.println(Cgpa);

		// Question 3: Write a program which asks the user to enter his/her name and greets them with "Hello <name>, have a good day" text.

		// System.out.println("Enter your name:");
		// String name = sc.next();
		// System.out.println("Hello " +name+ " ,Have a Good Day");

		// Qusetion 4: Write a program to convert Kilometer to meter -> therefor 1km = 1000m

		// System.out.println("Enter Kilometer that you Convert to meter:");
		// float km = sc.nextFloat();
		// float meter = km * 1000;
		// System.out.println(meter);

		// Question 5: Write a program to detect whether a number is entered by the user is Integer or Not.

		System.out.println("Enter any Number:");
		//boolean num = sc.hasNextInt();
		// System.out.println(num);
		// Another Method:
		boolean num;
		if(num = sc.hasNextInt()){
			System.out.println(num+" it is an Integer Datatype number");
		}
		else{
			System.out.println(num+" it is an Another Datatype number");
		}
	}
}