C++ program to calculate m to the power n

C++ Program to calculate m to the power n(m raise to n).

Example :

2² = 4 which is same as 2 x 2 = 4
4⁴ = 256 which is same as 4 x 4 x 4 x 4 = 256

Links that you may find important :

https://en.wikipedia.org/wiki/Nth_root
http://www.mathsisfun.com/numbers/nth-root.html
http://www.rkm.com.au/calculators/CALCULATOR-powers.html
http://www.free-online-calculator-use.com/exponent-calculator.html

Code :

#include <iostream.h>
#include <conio.h>
int power(int,int);
void main()
{
    int no,pow,val;
    clrscr();
    cout<<"Enter number : ";
    cin>>no;
    cout<<"Enter the power : ";
    cin>>pow;
    val=power(no,pow);//called function power which returns integer
    cout<<"The answer is : "<<val;
    getch();
}
int power(int no, int pow)
{
    int val;
    val=no;
    while(pow>=1)
    {
        if(pow==1)
            return no;
        if(pow>1)
            val=val*no;
        pow--;
    }
}

Output :

Enter number : 2
Enter the power : 8
The answer is : 256

Note : Since the type of number is integer the range of number which it can calculate is restricted.

Note : Leave a comment if you feel the program is incorrect and/or has errors and/or if the program and its output don't match. Please report about broken links.

Using filters in Linux

Examples based on filters in Linux.

Links that you may find important :

Sort :

http://linux.about.com/library/cmd/blcmdl1_sort.htm
http://linux.about.com/od/commands/a/Example-Uses-Of-The-Command-Sort.htm
https://www.ibm.com/developerworks/community/blogs/58e72888-6340-46ac-b488-d31aa4058e9c/entry/linux_sort_command_sort_lines_of_text_files9?lang=en

Java program based on static members

Program to count the number of objects created for a class using static member.

Code :

class Obj{
    static int count;
    Obj(){
        count++;
        System.out.print("\nObject  "+count+" created...");
    }
    static void showCount(){
        System.out.print("\nTotal Object Count  :  "+count);
    }
}
class ObjCount{
    public static void main(String args[]){
        Obj o1=new Obj();
        Obj o2=new Obj();
        Obj.showCount();
        Obj o3=new Obj();
        Obj.showCount();
    }  
}

Output :

Object  1 created...
Object  2 created...
Total Object Count  :  2
Object  3 created...
Total Object Count  :  3

Note : Leave a comment if you feel the program is incorrect and/or has errors and/or if the program and its output don't match. Please report about broken links.

Java program to sort a given array

Java program to sort a given array.

Code :

class Array{
    int a[]={9,7,4,-1,0};
    voidsortArray(){
    int i,j,temp;
    for(i=0;i<a.length;i++){
        for(j=0;j<a.length-1;j++){
            if(a[j]>a[j+1]){
                    temp=a[j];
                    a[j]=a[j+1];
                    a[j+1]=temp;
                }
            }
        }
    }
    voidshowArray(){
        for(inti=0;i<a.length;i++){
            System.out.print(" a["+i+"] : "+a[i]+"\t");
        }
    }
}
class Sort{
    public static void main(String args[]){
        Array t=new Array();
        System.out.print("\n Array Elements : \n ");
        t.showArray();
        System.out.print("\n Sorted Array Elements : \n ");
        t.sortArray();
        t.showArray();
    }
}

Output :

Array Elements :
  a[0] : 9       a[1] : 7        a[2] : 4        a[3] : -1       a[4] : 0

 Sorted Array Elements :
  a[0] : -1      a[1] : 0        a[2] : 4        a[3] : 7        a[4] : 9

Note : Leave a comment if you feel the program is incorrect and/or has errors and/or if the program and its output don't match. Please report about broken links.

Java program based on constructor

Program to keep record of height and weight of people.

Code :

import java.io.*;
class Person{
    float height;
    float weight;
    Person(float h,float w){
        height=h;
        weight=w;
    }
    void putPersonData(){
        System.out.print("\nHeight : "+height+" Weight : "+weight);
    }
};
class PersonCount{
    static int count;
    static Person p[]=new Person[10];
    static void showCount(){
        for(int i=0;i<10;i++){
            p[i].putPersonData();
            if(p[i].height>170 && p[i].weight<50){
                count=count+1;            
            }
        }
        System.out.print("\n\nTotal Count (weight<50kg AND height>170cm ) : "+count+"\n");
    }
    public static void main(String args[]){
        p[0]=new Person(173,40);
        p[1]=new Person(170,30);
        p[2]=new Person(168,55); 
        p[3]=new Person(172,55);
        p[4]=new Person(169,55);
        p[5]=new Person(175,70);
        p[6]=new Person(171,45);
        p[7]=new Person(172,55);
        p[8]=new Person(168,55);
        p[9]=new Person(168,65);
        showCount();
    }
}

Output :

Height : 173.0 Weight : 40.0
Height : 170.0 Weight : 30.0
Height : 168.0 Weight : 55.0
Height : 172.0 Weight : 55.0
Height : 169.0 Weight : 55.0
Height : 175.0 Weight : 70.0
Height : 171.0 Weight : 45.0
Height : 172.0 Weight : 55.0
Height : 168.0 Weight : 55.0
Height : 168.0 Weight : 65.0

Total Count (weight<50kg AND height>170cm ) : 2

Program to maintain score card of students.

Code :

import java.io.*;
class Student{
    String name;
    Student(String nm){
        name=nm;
    }
    void putStudentName(){
        System.out.print("\n Student Name : "+name);
    }
};
class Marks{
    Student s;
    int mark1,mark2;
    Marks(String name,int m1,int m2){
        s=new Student(name);
        mark1=m1;
        mark2=m2;
    }
    void putmarks(){
        s.putStudentName();
        System.out.print("\nMark 1 : "+mark1);
        System.out.print("\nMark 2 : "+mark2);
        putAverage();  
    } 
    void putAverage(){
        float t=(mark1+mark2)/(float)2;
        System.out.print("\nAverage : "+t);
    } 
};
class Result{
    public static void main(String args[]){
        Marks m=new Marks("Maverick",80,85);
        m.putmarks();
    }
}

Output :

Student Name : Maverick
Mark 1 : 80
Mark 2 : 85
Average : 82.5

Note : Leave a comment if you feel the program is incorrect and/or has errors and/or if the program and its output don't match. Please report about broken links.