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How many times will the following loop execute? What will be the final value?int a=1,x=0;do{x=a++ *a,}while(a<=5),System out.println(x);}

Question

How many times will the following loop execute? What will be the final value?

int a=1,x=0;
do { 
    x = a++ * a;
} while (a &lt;= 5);
System.out.println(x);
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Solution

The loop will execute 5 times. Here's how it works:

  1. Initially, a is 1 and x is 0.
  2. In the first iteration, x is assigned the value of a (which is 1) times a (which is incremented to 2 after the multiplication). So, x becomes 1*2 = 2.
  3. In the second iteration, a is 2 and it's incremented to 3 after the multiplication. So, x becomes 2*3 = 6.
  4. In the third iteration, a is 3 and it's incremented to 4 after the multiplication. So, x becomes 3*4 = 12.
  5. In the fourth iteration, a is 4 and it's incremented to 5 after the multiplication. So, x becomes 4*5 = 20.
  6. In the fifth iteration, a is 5 and it's incremented to 6 after the multiplication. So, x becomes 5*6 = 30.

After the fifth iteration, a is 6 which is more than 5, so the loop condition a<=5 is not satisfied and the loop stops executing.

Therefore, the loop executes 5 times and the final value of x is 30.

This problem has been solved

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