(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

State the number of bytes occupied by char and int data types.

Name the following :
(i) A keyword used to call a package in the program.
(ii) Any one reference data type.

State the data type and value of res after the following is executed:
char ch = ‘t’;
res=Character. toUpperCase(ch);

Differentiate between searching and sorting.

If int x [ ] = { 4, 3,7, 8, 9,10}; what are the values of p and q ?

(i) p = x.length
(ii) q = x[2] + x[5] * x[1]

Write a difference between the functions isUpperCase() and toUpperCase().

int res = ‘A’; 

What is the value of res?

What is a parameterized constructor?

Write a program to input forty words in an array. Arrange these words in descending order of alphabets, using selection sort technique. Print the sorted array.

Write the return data type of the following function:

log( )

Name the two types of constructors.

Write the output of the following program code:

char ch ;
int x=97;
do
{
ch=(char) x;
System.out.print(ch + “ ” );
if(x%10 == 0)
break;
++x;
}while(x<=100);

Write a program to accept a number and check and display whether it is a Niven number or not. 
(Niven number is that number which is divisible by its sum of digits).
Example:
Consider the number 126.
The Sum of its digits is 1+2+6 = 9 and 126 is divisible by 9.

Write a program to accept a name and total marks of N number of students in two single subscript array name[] and totalmarks[].

Calculate and print:

1. The average of the total marks obtained by N Number of students.
   [average = (sum of total marks of all the students)/N]
2. Deviation of each student’s total marks with the average
   [deviation = total marks of a student – average] 

Using the switch statement, write a menu driven program to:
(i) To find and display all the factors of a number input by the user (including 1 and excluding number itself).

Example:
Sample Input: n=15
Sample Output: 1, 3, 5.
(ii) To find and display the factorial of a number input by the user (the factorial of a non-negative integer n, denoted by n\ is the product of all integers less than or equal to n.
Example:
Sample Input: n=5
Sample Output: 5! = 1×2×3×4×5 = 120.
For an incorrect choice, an appropriate error message should be displayed.

State one difference between the floating point literals float and double.

Find the errors in the given program segment and re-write the statements correctly to assign values to an integer array.
int a = new int (5);
for (int i = 0; i < = 5; i++) a [i] = i;

What is the data type returned by the library function?
compareTo()

What will be the output when the following code segment is  executed?
String s = “1001”;
int x = Integer. valueOf(s);
double y = Double.valueOf(s);
System.out.println(“x=”+x);
System.out.println(“y=”+y); 

What will be the output when the following code segment is executed?

System.out.println(“The king said\”Begin at the beginning!\“to me.”);