Java Arithmetic Operators Compound Assignment Operators Question 1

Question

We would like to

What is the output of the following code? 

public class Main {
  public static void main(String[] args) {
    int sum = 0; 
    sum += 4.5;

    System.out.println(sum); 

  }
}



4

Note

In Java, an augmented expression of the form x1 op= x2 is implemented as 

x1 = casting in an augmented (T)(x1 op x2), where T is the type for x1.

Therefore, the following code is correct. 

int sum = 0; 
sum += 4.5; // sum becomes 4 after this statement 
sum += 4.5 is equivalent to sum = (int)(sum + 4.5).



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