(English Medium) ICSE Class 10 - CISCE Important Questions

Give the output of the following String class method:

"COMMENCEMENT".lastIndexOf('M')

Give the output of the following String class method:

"devote". compareTo("DEVOTE")

Define a class to accept a String and print the number of digits, alphabets and special characters in the string.

int x = 98; char ch = (char)x; what is the value in ch?

The output of the statement "CONCENTRATION" indexOf('T') is ______.

The output of the statement "talent". compareTo("genius") is ______.

Evaluate the expression when x is 4:

x + = x + + * + + x %2; 

The following code to compare two strings is compiled, the following syntax error was displayed - incompatible types - int cannot be converted to boolean.

Identify the statement which has the error and write the correct statement. Give the output of the program segment.

void calculate()
  {
  String a="KING",b="KINGDOM";
  boolean x=a.compareTo(b);
  system.out.println(x);
  }

Consider the array given below:

char ch[]={'A','E','I','O','U'};

Write the output of the following statements:

System.out.println(ch[0]*2);;

Write the output of the following String methods:

String x="Galaxy",y="Games";
(a)  System.out.println(x.charAt(0)==y.charAt(0));
(b)  System.out.println(x.compareTo(y));

State a difference between call by value and call by reference. 

Give the output of the following:
Math.sqrt(Math.max(9, 16))

What are the two ways of invoking functions?

Differentiate between formal parameter and actual parameter. 

How are private members of a class different from public members?

Design n class to overload a function SumSeriesO as follows: 

(i)

void SumSeries(int n, double x) – with one integer argument and one double argument to find and display the sum of the series given below:

`"s"  = "x"/1 - "x"/2 + "x"/3 - "x"/4 + "x"/5`...... ...... ...... to n terms

(ii)

void SumSeries() – To find and display the sum of the following series:
s = 1 + (1 x 2) + (1 x 2 x 3) + ….. + (1 x 2 x 3 x 4 x 20)

Write a menu-driven program to display the pattern as per the user’s choice. 

For an incorrect option, an appropriate error message should be displayed.

Write a method prototype name check() which takes an integer argument and returns a char:

The number of values that a method can return is ______.

A method which does not modify the value of variables is termed as ______.