Natural Number:- Counting Numbers are known as Natural numbers.
Example:-
1, 2, 3, 4, 5, 6.......N.
Problem statement:- Program to find the sum of N natural numbers.
Sample Input/Output:-
Sample Input First: 25 Sample Output First: 325
Sample Input Second: 23 Sample Output Second: 276
Explanation:-
For output 1st: 1+2+3+4+6+7.......+24+25=325
For output 2nd: 1+2+3+4+6+7.......+22+23=276
Data requirement:-
Input Data:- n
Output Data:-Sum
Additional Data:- i
Program in C
Input Data:- n
Output Data:-Sum
Additional Data:- i
Program in C
Here is the source code of the C Program to find the sum of first n natural numbers.
Code:
#include<stdio.h>
int main()
{
int n, i;
//Take input number of natural number
printf("Enter the N value:");
scanf("%d",&n);
int sum=0;
//Calculate sum of the n natural number
for(i=1;i<=n;i++)
{
sum=sum+i;
}
//display the sum of the n natural number
printf("The sum of N Natural numbers is %d",sum);
}
Input/Output:
Enter the N value:25
The sum of N Natural numbers is 325
Program in C++
Here is the source code of the C++ Program that asks the user for a number n and prints the sum of the numbers 1 to n.
Code:
#include<iostream>
using namespace std;
int main()
{
int n;
//Take input number of natural number
cout<<"Enter the N value:";
cin>>n;
int sum=0;
//Compute sum of the n natural number
for(int i=1;i<=n;i++)
{
sum=sum+i;
}
//display the sum of the n natural number
cout<<"The sum of n natural numbers is "<<sum;
}
Input/Output:
Enter the N value:23
The sum of n natural numbers is 276
Program in Java
Here is the source code of the Java Program to find the sum of n natural numbers using for loop.
Code:
import java.util.Scanner;
public class SumOfNnatrual {
public static void main(String[] args) {
Scanner cs=new Scanner(System.in);
int n;
//Take input number of natural number
System.out.println("Enter the N value:");
n=cs.nextInt();
//Compute sum of the n natural number
int sum=0;
for(int i=1;i<=n;i++)
{
sum=sum+i;
}
//display the sum of the n natural number
System.out.println("The sum of n natural numbers is "+sum);
cs.close();
}
}
Input/Output:
Enter the N value:
45
The sum of n natural numbers is 1035
The sum of n natural numbers is 1035
Program in Python
Here is the source code of the Python Program to find the sum of n natural numbers using for loop.
Code:
#Take input number of natural number
n=int(input("Enter the N value:"))
#Calculate the sum of the n natural number
sum=0
for i in range(1,n+1):
sum=sum+i
sum=0
for i in range(1,n+1):
sum=sum+i
#display the sum of the n natural number
print("The sum of n natural numbers is ", sum)
Input/Output:
Enter the N value:55
The sum of n natural numbers is 1540
More Questions:-
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