java-control structures-vlits

Which of the following loops will execute the body of loop even when condition controlling the loop is initially false?

• do-while

• while

• for

• none of the mentioned

What is the data type that can be used with case statement in switch control structure?

• The double data type.

• The float data type.

• The char data type.

• The String data type.

Which of the following will be the output of the above program?

public class Compute {

public static void main (string args [ ]){

int result, x ;

x = 1 ;

result = 0;

while (x < = 10) {

if (x%2 == 0)

result + = x ;

+ + x ;

}

System.out.println(result) ;

}

}

• 55

• 30

• 25

• 35

class Test {

public static void main(String[] args){

int i = 0, j = 9;

do {

i++;

if (j-- < i++) {

break;

}

} while (i < 5);

System.out.println(i + "" + j);

}

}

• 44

• 55

• 66

• 77

public class Test{

public static void main(String args[]){

int i = 0, j = 5 ;

for( ; (i < 3) && (j++ < 10) ; i++ ){

System.out.print(" " + i + " " + j );

}

System.out.print(" " + i + " " + j );

}

}

• 0 6 1 7 2 8 3 8

• 0 6 1 7 2 8 3 9

• 0 6 1 5 2 5 3 5

• Compilation Error

class Test{

public static void main(String args[]){

int x=7;

if(x==2); // Note the semicolon

System.out.println("NumberSeven");

System.out.println("NotSeven");

}

}

• NumberSeven NotSeven

• NumberSeven

• NotSeven

• Error

public class Test{

public static void main(String args[]){

int i, j;

for(i=1, j=0;i<10;i++) j += i;

System.out.println(i);

}

}

• 10

• 11

• 9

• 20

public class Test{

public static void main(String[] args){

double sum = 0;

for(double d = 0; d < 10;){

d += 0.1;

sum += sum + d;

}

}

}

• The program has a compile error because the adjustment is missing in the for loop.

• The program has a compile error because the control variable in the for loop cannot be of the double type.

• The program runs in an infinite loop because d<10 would always be true.

• The program compiles and runs fine.

Which of the following for loops will be an infinite loop?

• for(; ;)

• for(i=0 ; i<1; i--)

• for(i=0; ; i++)

• All of the above

What is the value of a[1] after the following code is executed?

int[] a = {0, 2, 4, 1, 3};

for(int i = 0; i < a.length; i++)

a[i] = a[(a[i] + 3) % a.length];

• 0

• 1

• 2

• 3