Question

write the output of the following:

int a=5, b=25;

while(a<b)

{

b -=a

System.out.println(“a=”+a+ “ \tb=”+b);

}​

Answer 1

$\textsf{\large{\underline{O{u}tput}:}}$

The output for the given co‎de is as follows:

a=5  b=20

a=5  b=15

a=5  b=10

a=5  b=5

$\textsf{\large{\underline{Steps}:}}$

Let us dry run our co‎de to get the output.

When a = 5 and b = 25:

→ a < b is true. Loop executes.

> b -= a

> b = b - a

> b = 25 - 5

> b = 20

So, the output is: a=5, b=20

———————————————————————————

When a = 5 and b = 20:

→ a < b is true. Loop executes.

> b -= a

> b = b - a

> b = 20 - 5

> b = 15

So, the output is a=5, b=15

———————————————————————————

When a = 5 and b = 15:

→ a < b is true. Loop executes.

> b -= a

> b = b - a

> b = 15 - 5

> b = 10

So, the output is a=5, b=10

———————————————————————————

When a = 5, b = 10:

→ a < b is true. Loop executes.

> b -= a

> b = b - a

> b = 10 - 5

> b = 5

So, the output is a = 5, b = 5

Now, a < b is false. So, the loop is terminated.

So, the final output is:

a=5  b=20

a=5  b=15

a=5  b=10

a=5  b=5