while statement program

Problem: Create program that ask the user to input "How many hello world you want to print" and the output show number and hello world.

import java.util.Scanner;

public class helloworld
{
public static void main(String args[])
{
    Scanner input=new Scanner(System.in);
    int num;
    int start=1;
  System.out.print("How hello world you want to display");
  num=input.nextInt();

  while(start<= num)
  {
     System.out.println(start + ".Hello");
    start++;
  }

}
}

Looping

Looping is a programming language statement which allows code to be repeatedly executed. A for loop is classified as an iteration statement. Unlike many other kinds of loops, such as the while loop, the for loop is often distinguished by an explicit loop counter or loop variable.

there are three different type of looping, used in programming.
1. while Loop
2. do while Loop
3. for Loop

for loop sample program

sample program using for loop in java.
this program will ask the user to input how many numbers they want to print:

import java.util.Scanner;

public class samplefor
{
public static void main(String args[])
{
Scanner input=new Scanner(System.in);
int num;
int x;

System.out.print("How many numbers you want to print:");
num=input.nextInt();

for(x=0; x<=num; x++)
{
System.out.println(x");
}
}
}

for Loop

for loop is a part of programming to execute program continuesly until it reaches the final looping of final number of loop.

example program.

int x;
for(x=0; x<=10; x++)
{
System.out.println(x);
}

sample output:

0
1
2
3
4
5
6
7
8
9
10

syntax in programming

syntax is a rules in programing.

for loop sysntax:

for(init; condition; inc/dec)
{
statements;
}