Description

To calculate the average between the given range, first find the sum of the number
 in given range and divide the sum by total number present in that range.

C/C++

/* C Program to find the average of numbers in a given range */
//Save it as AverageNumber.c

#include<stdio.h>
int main(){

    int i, beg, last, sum=0, countNum=0;
    float average;

    printf("Enter the first number of range : ");
    scanf("%d",&beg);

    printf("Enter the last number of range : ");
    scanf("%d",&last);

    
    //Traverse from start to end in a range
    
    for(i=beg;i<=last;i++){
        
        //Calculate the sum between the range
        
        sum+=i;
        
        //Count the number between range
        
        countNum++;
    }
    
    //Find the average
    
    average = (float)sum/countNum;

    printf("The average is : %.3f",average);

    return 0;
}

Input:
Enter the first number of range : 
2
Enter the last number of range : 
5

Output:
The average is : 3.500

Java

/* Java Program to find the average of numbers in a given range */
//Save it as AverageNumber.java


import java.io.*;
import java.util.Scanner;

public class AverageNumber {

    public static void main(String[] args) {
        
            Scanner scanner = new Scanner(System.in);
        
            int i, beg, last, sum=0, countNum=0;
        float average;

        System.out.println("Enter the first number of range : ");
        beg = scanner.nextInt();

        System.out.println("Enter the last number of range : ");
        last = scanner.nextInt();
        
        
        //Traverse from start to end in a range
        
        for(i=beg;i<=last;i++){
            
        	//Calculate the sum between the range
            
            sum+=i;
            
            //Count the number between range
            
            countNum++;
        }
        
        //Find the average
        
        average = (float)sum/countNum;

        System.out.println("The average is : "+average);
    }
}

Input:
Enter the first number of range : 
2
Enter the last number of range : 
5

Output:
The average is : 3.5

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