Which of the following are valid case statements in a switch

Reference no: EM13162220

1. This statement lets the value of a variable(int or char type only) or expression determine where the program will branch to.a.Selectb.associativec.scoped.switch
2.What will following segment of code output?int x = 5;
if (x != 2)
     System,out.println( "This is true!");
else
     System.out.println( "This is false!");
     System.out.println("This is all folks!");

3. Which of the following are valid case statements in a switch?

a. case 'ab':b.case x < 4:c.case 1:d. case 1.5:

4. What is the output of the following code fragment?int i = 2;
switch(i + 1){
    case 0: i = 15; break;
    case 1: i = 25; break;
    case 2: i = 35; break;
    case 3: i = 40; break;
    default: i = 0;
}
System.out.println( i );

5. After execution of the following code, what will be the value of input_value?int input_value = 0;
if (input_value > 5){
      input_value = input_value + 5;
}
else if (input_value > 2){
      input_value = input_value + 10;
}
else {
    input_value = input_value + 15;
}

6.If x has the value of 3, y has the value of -2, and w is 10, is the following condition true or false?
      if ( x < 2 && w < y)

7. What is the final value of x after the following fragment of code executes?
    int x = 0;
    do {
         x++;
    }while (x > 0);

8.What is the output of the following segment of code if 4 is input by the user when asked to enter a number?
int num, total = 0;
Scanner scan = new Scanner(System.in);
System.out.println("Enter a number from 1 to 10: ");
num = scan.nextInt( );
switch (num)
{
    case 1:
    case 2: total = 5;
    case 3: total = 10;
    case 4: total = total + 3;
    case 8: total = total + 6;
    default: total = total + 4;
}
System.out.println( total );

9.All switch statements can be converted into nested if-else statements but all nested if-else statements cannot be converted into switch statements. Ture or False

10.What is wrong with the following for loop?
   for (int i = 0; i < 10; i -- ){
       System.out.println("Hello");
   }

Reference no: EM13162220

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