Q: What is the value of the expression a <<= 2 using the compound assignment operator in Java? a = 5
B
Answer:
B
Explanation:
In Java, the expression a <<= 2 is a compound assignment operator that performs a left shift on the variable a by the number of bits specified on the right side of the <<= operator. It is equivalent to the expression a = a << 2.
Here's an example in Java:
<![CDATA[
public class CompoundAssignmentExample {
public static void main(String[] args) {
// Declare variables
int a = 5;
// Compound assignment (left shift by 2 bits)
a <<= 2;
// Display the result
System.out.println("The value of a after a <<= 2 is: " + a);
}
}
]]>
In this example, if a is initially 5, after the operation, the value of a will be 20. This is because the binary representation of 5 is 0000 0101, and left-shifting it by 2 bits results in 0001 0100, which is 20 in decimal.
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Assignment Operators