Question

Question 1: What is For Loop? Explain with 2 Examples. You can write code in any programming language.

Answer 1

For-Loop is basically programming control flow statement for executing a set of instructions inside it for a specific number of times or until unless a condition is violated .

It has two parts:

• a header for specifying an iteration
• body part (generelly enclosed within{ ,} )

Inside the header it has three parts which are applied on a loop variable say i (the variable that runs the loop) :

• initailization(eg : i= 0)-It tells with what initial value loop starts from
• condition ( i<5) it tells till what iterations loop must run
• increment or decrement or any other operation =It tells how to change the control variable
• The syntax pseudo code for all programming language is:
• for( i:initialize;i :(condition);i:(operation))

{

Body of loop with set of instructions

}

Example 1: Let us take an example to print Hello 10 times:

Approach : You can write code Hello 10 times seperately but it would be very repeated code and would not appear code for a programme .

So for your rescue comes the foor loop:

for(int i=0;i<10;i++){

System.out.println("Hello)   

}

In above you can see you dont need the loop variable i inside the body but it is used to control the loop.If you replace < with <= symbol the loop will print hello 11 times.

Example 1: Let us take an example to print sum of numbers from 1 to 10:

Approach : You can write code as :

ans 1+2+3_ __ 10; but it will be a bad progrmming practice

So for your rescue comes

the foor loop:

for(int i=1;i<=10;i++){

ans=ans+10;

}

In above you can see you need the loop variable i inside the body If you replace < = with < symbol the loop will compute sum from 1 to 9.

Please find the code attached below in JAVA.

If you have any doubts feel free to ask

public class forLoop{

     public static void main(String []args){
         //Code for printing Hello 10 times
         for(int i=1;i<=10;i++)
         {
             //Print statement in Java
            System.out.println("Hello"); 
             
         }
         int ans=0;
         //Code for sum of numbers from 1 to 10
         for(int i=1;i<=10;i++)
         {
             ans=ans+i;
         }
         System.out.println("The some of numbers from 1 to 10 is "+ans);
         
     }
}