2.5 How many times does this while loop execute?
int nu

Question

2.5 How many times does this while loop execute?
int num;
num = 1;
while (num<=12 ) {
num = num*2;
}

Write your answer here:

TutorBin · Accepted Answer

//Answer for question g4

public class G4{

public static void main(String[] args) {
        
        //Answer for Q 2.5
        //Answer: The first line creates an integer variable.
        //        The second line initializes this integer to 1.
        //        Then there is a while loop, that runs till num <= 12.
        //        Within the body of the loop, for each iteration, the current value of 'num' will be multiplied by 2.
        //        The result of this multiplication will be stored in 'num' and update the value of 'num'.
        //        To find out how many times the loop runs, lets check the iterations.

//Iterations will be as follows:
        //At num = 1, num*2 = 1*2 = 2. So, num = 2.
        //At num = 2, num*2 = 2*2 = 4. So, num = 4.
        //At num = 4, num*2 = 4*2 = 8. So, num = 8.
        //At num = 8, num*2 = 8*2 = 16. So, num = 16.

//The loop will terminate when num = 16, as its greater than 12.
        //So the loop will run 4 times only as shown above.

int num;
        num = 1;
        
        while(num <= 12){

num = num*2;
        }

}

2.5 How many times does this while loop execute?

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