Computer Applications
A student needs to calculate the average of three numbers x, y, and z. Which is the correct Java expression for this calculation?
Java Operators
5 Likes
Answer
(x+y+z)/3.0
Reason — Division (/) has higher precedence than addition (+), so without parentheses, the division would happen before the addition. Using parentheses ensures that the sum x + y + z is calculated first, and then divided by 3.0. Using 3.0 ensures the division is performed as floating-point, avoiding integer truncation. This guarantees the correct calculation of the average.
Answered By
3 Likes
Related Questions
Evaluate the given expression when the value of a=2 and b=3
b*=a++ - ++b + ++a; System.out.println("a= "+a); System.out.println("b= "+b);A store has purchased some cola cans of various brands. It purchased 50 cans @ ₹15 per can, 30 cans @ ₹20 per can and 40 cans @ ₹21 per can. Write a Java program to compute how much amount did the store pay.
A student executes the following code to increase the value of a variable ‘x’ by 2.
He has written the following statement, which is incorrect.
x = +2;What will be the correct statement?
A. x +=2;
B. x =2;
C. x = x +2;- Only A
- Only C
- All the three
- Both A and C