User-Defined Methods — Question 38
Back to all questionsQuestion 36
Write a program that uses a method power( ) to raise a number m to power n. The method takes int values for m and n and returns the result correctly. Use a default value of 2 for n to make the function calculate squares when this argument is omitted. Write a main( ) method to get the value of m and n to display the calculated result.
import java.util.Scanner;
public class KboatCalcPower
{
public double power(int m) {
double pow = Math.pow(m,2);
return pow;
}
public double power(int m, int n) {
double pow = Math.pow(m,n);
return pow;
}
public static void main(String args[]) {
KboatCalcPower obj = new KboatCalcPower();
Scanner in = new Scanner(System.in);
System.out.print("Enter m: ");
int m = in.nextInt();
System.out.print("Enter n: ");
int n = in.nextInt();
double res = obj.power(m,n);
System.out.println("m^n = " + res);
res = obj.power(m);
System.out.println("Omitting n");
System.out.println("m^2 = " + res);
}
}Output
Key Concepts Covered
This question tests your understanding of the following concepts from the chapter User-Defined Methods: Question, Program, Uses, Method, Power, Raise. These are fundamental topics in Computer Applications that students are expected to master as part of the ICSE Class 10 curriculum.
A thorough understanding of these concepts will help you answer similar questions confidently in your ICSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This Question
Read the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to Remember
- Write programs with proper indentation and comments.
- Trace through your code with sample inputs to verify correctness.
- Explain the logic behind each step of your solution.
- Familiarise yourself with common library functions and methods.
Practice more questions from User-Defined Methods — Computer Applications, Class 10 ICSE