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9. What is the value of x1 if x = 5?
x1 = ++x - x++ + --x; [2017]
Ans. = 6 - 6 + 6
= 0 + 6
= 6
10. Write down Java expression for:
2
2
2
T = (A + B + C ) [2016]
Ans. T = Math.sqrt(A * A + B * B + C * C);
11. Rewrite the following using ternary operator:
if(x % 2 == 0)
System.out.print("EVEN");
else
System.out.print("ODD"); [2016]
Ans. System.out.print(((x % 2 == 0)? "EVEN":"ODD"));
12. Give the output of the following expression:
a += a++ + ++a + --a + a--; when a = 7. [2016]
Ans. a = a + a++ + ++a + --a + a--;
= 7 + 7 + 9 + 8 + 8
= 14 + 9 + 8 + 8
= 23 + 8 + 8
= 31 + 8
= 39
13. Evaluate the value of n if value of p = 5, q = 19.
int n = (q - p) > (p - q)? (q - p) : (p - q); [2015]
Ans. (19-5)>(5-19) = 14>-14 = true
n = 19 - 5 = 14.
14. Write the Java expression for:
2
2
a + b + 2ab [2015]
Ans. (a * a + b * b) / (2 * a * b)
15. If int y = 10 then find int z = (++y * (y++ + 5)); [2015]
Ans. z = (11 * (11 + 5))
= 11 * 16
= 176
16. Operators with higher precedence are evaluated before operators with relatively lower precedence. Arrange the operators
given below in order of higher precedence to lower precedence. [2014]
a. && b. %
c. >= d. ++
Ans. ++, %, >=, &&
17. Give the output of the following method:
public static void main(String[] args)
{
int a = 5;
a++;
System.out.println(a);
a -= (a--) - (--a);
System.out.println(a);
} [2014]
Ans. 6
4
[Explanation: a++ = 6 as printing is done in next line.
7676 Touchpad Computer Applications-X

