What will be the final value of 'b' after executing the following statements: int a=1, b=2; b += a;

The final value of 'b' will be 3 after executing the given statements. Here’s a breakdown of the operations involved:

Initially, the integer variables are defined as follows:

• 'a' is assigned a value of 1.
• 'b' is assigned a value of 2.

The operation that takes place is b += a;, which is a shorthand for b = b + a;. This means that the current value of 'b' (which is 2) will be increased by the value of 'a' (which is 1).

So the calculation can be shown as:

• Starting value of 'b' = 2
• Value of 'a' = 1
• New value of 'b' = 2 + 1 = 3

Thus, the final value of 'b' is indeed 3, confirming that this is the correct answer.