Rupa Pandit solutions for Computer Applications [English] Class 10 ICSE chapter 3 - User-Defined Methods [Latest edition]

The method prototype is ______.

The most restrictive access specifier is ______.

______ statement is used for taking the control back to the super method.

A method name should be ______.

A method that does not return any value has return type ______.

A method is contained by ______.

Member data of a class are available to:

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 ______.

Assertion(A): call by value is known as pure method.

Reason(R): The original value of variable does not change as operation is performed on copied values.

Local data ______ (can/cannot) be accessed outside the method.

The parameters that are used in the ______ (Calling/Called) method are called formal parameters.

Methods help in ______ (code/program) reusability.

The prototype is the ______ (first/last) line of the method.

A method can return ______ (one/multiple) variables.

When the same method has to be called repeatedly with different values, the method call is placed inside a ______ (loop/conditions).

A class ______ (can/cannot) have multiple methods.

Java implements polymorphism through ______.

Member data of a class are ______ to all the methods of the class.

A ______ consists of member data and methods.

State True or False. Correct the false statement.

A method can accept one or more values as arguments.

State True or False. Correct the false statement.

A Prototype is the way of declaring a program.

State True or False. Correct the false statement.

A Called-method calls a Calling-method.

State True or False. Correct the false statement.

A method is contained by a class.

State True or False. Correct the false statement.

Those data which are declared in a method are called member data.

Differentiate between formal parameter and actual parameter. 

Differentiate between local and member data.

Differentiate between calling method and called method.

Differentiate between methods with return type void and int.

Differentiate between main() method and other methods.

Differentiate between the pure method and Impure method.

Answer the following in brief. Give a reason/example wherever applicable.

What are the types of method prototypes?

Answer the following in brief. Give a reason/example wherever applicable.

What is the role of return_type in a method?

What is meant by method prototype?

Answer the following in brief. Give a reason/example wherever applicable.

Explain Call by Value and Call by Reference.

Answer the following in brief. Give a reason/example wherever applicable.

Give a program example of a method call in a loop.

Write the prototype of a method.

named fnFest, which has a return type of int and takes one int argument.

Write the prototype of a method.

named fnBrit, which has no argument to return and takes no arguments.

Write the prototype of a method.

named fnToast, which returns a data of type double and takes two arguments of data type double.

Write the prototype of a method.

named fnNook, which returns a boolean value and takes a string argument.

Write the prototype of a method.

named fnPen, that returns no value and takes 3 integer arguments.

Observe the following code. It may contain Syntax, Logical or runtime errors. Execute it in Java and identify the error, if any. Rewrite the code without the error. Also write the aim of the code.

void fnMax(int n1, int n2)
{
   int max = (n1 > n2) ? n1:n2;
   return max;
}

Observe the following code. It may contain Syntax, Logical or runtime errors. Execute it in Java and identify the error, if any. Rewrite the code without the error. Also write the aim of the code.

int fnMin(int n1, int n2)
{
   return (n1>n2)? n1:n2);
}

Observe the following code. It may contain Syntax, Logical or runtime errors. Execute it in Java and identify the error, if any. Rewrite the code without the error. Also write the aim of the code.

 int fnTale(int n)
{
   if(n%2=0)
   {
      return(n*n);
   }
   return(n*n* n);
}

Observe the following code. It may contain Syntax, Logical or runtime errors. Execute it in Java and identify the error, if any. Rewrite the code without the error. Also write the aim of the code.

int int fnWork(int p, intq)
{
    int s=p b;
    int r=p*q;
   return s;
   return r;
}

Observe the following code. It may contain Syntax, Logical or runtime errors. Execute it in Java and identify the error, if any. Rewrite the code without the error. Also write the aim of the code.

 double fnTask(double p, double q)
{
    double d = p/q:
    double r = p%q;
    return d, r;
}

Observe the following code. It may contain Syntax, Logical or runtime errors. Execute it in Java and identify the error, if any. Rewrite the code without the error. Also write the aim of the code.

int fnJob(int n)
{
    while (n>0)
    {
      int d = n%10;
      n = n/10;
      return d;
    }
}

Observe the following code. It may contain Syntax, Logical or runtime errors. Execute it in Java and identify the error, if any. Rewrite the code without the error. Also write the aim of the code.

int fnTotalDigits(int n)
{
    int td=0;
    while(n>0)
    {
        n=n/10;
        td++;
    }
    return td;
    System.out.print("total digits=" + td);
}

Observe the following code. It may contain Syntax, Logical or runtime errors. Execute it in Java and identify the error, if any. Rewrite the code without the error. Also write the aim of the code.

int fnConsign(int a, int b)
{
    if(a > b)
    {
        return а;
    }
    if(b > a)
    {
        return b;
    }
}

Observe the following code. It may contain Syntax, Logical or runtime errors. Execute it in Java and identify the error, if any. Rewrite the code without the error. Also write the aim of the code.

import java.util.*;
public class cl Factorial
{
   void fn Factorial(int num)
   {
      for(int k = 1; k <= num; k++)
              f = f*k;
   }
   public void main()
   {
      int number = 0;
      Scanner sc = new Scanner(System.in);
      System.out.print("Enter the number:");
      number = sc.nextInt();
      int cpy = number, dg = 0, facdg = 0;
      while(cpy > 0)
      {
              dg = cpy % 10;
              facdg = factorial(dg);
              System.out.println("Factorial of "+dg+"="+facdg);
      }
   }
}

Observe the following code. It may contain Syntax, Logical or runtime errors. Execute it in Java and identify the error, if any. Rewrite the code without the error. Also write the aim of the code.

import java.io.*;
class Paper
}
   int fnBox(int limit)
   {
      for(int sum = 0, t= 1; t <= limit;t++)
              sum = sum + t;
      return sum;
   }
   void main()
   {
      int N;
      Scanner sc = new Scanner(System.in);
      System.out.print("Enter limit:");
      N = sc.nextInt();
      System.out.print("Result=" + fnBox(N));
   }
}

Write a program as per the given specification.

Design a class to overload a method Action () given that

1. void Action (int, int) - Print the larger variable
2. void Action (char, char) - Print the first character in lower case, second character in upper case [assume both are alphabets]
3. void Action (String, String) – Print the longer string

Write the above methods and the main () method to call the three overloaded methods.

Write a program as per the given specification.

Design a class to overload a method Series() given that

1. long Series (int n) – Returns the product of first n natural numbers (1*2*3 * ... * n)
2. long Series (int n1, int n2) – Returns the sum of natural numbers from n1 to n2 10 + 11 + 12 + 13 + 14 + 15, here assuming n1 = 10, n2 = 15

Write the above methods and the main () method to call the two overloaded methods.

Write a program as per the given specification.

Design a class to overload a method, Verify(), given that

1. boolean Verify (int n) - return true if n is a Prime number, false otherwise.
2. boolean Verify (int v, int f) - return true if f is a factor of v, false otherwise.

Write the above methods and the main() method to call the two overloaded methods.

Write a program as per the given specification.

Design a class called DeptStore with the following description:

Define a class to overload the method display as follows: