# Program to find the sum of series 1^2+2^2+3^2...+N^2

Problem statement:- Program to find the sum of series 1^2+2^2+3^2...+N^2

Data requirement:-

Input Data:- n

Output Data:- sum

Program in C

Here is the source code of the C Program to find the sum of series 1^2+2^2+3^2...+N^2.

Code:

#include<stdio.h>
#include<math.h>
int main()
{
int n,sum=0,i;
printf("Enter the range of number:");
scanf("%d",&n);
for(i=1;i<=n;i++)
sum+=i*i;
printf("The sum of the series = %d",sum);
}

Input/Output:
Enter the range of number:11
The sum of the series = 506

Program in C++

Here is the source code of the C++ Program to find the sum of series 1^2+2^2+3^2...+N^2.

Code:

#include<iostream>
using namespace std;
int main()
{
int n,sum=0,i;
cout<<"Enter the range of number:";
cin>>n;

for(i=1;i<=n;i++)

sum+=i*i;
cout<<"The sum of the series = "<<sum;
}

Input/Output:
Enter the range of number:7
The sum of the series = 140

Program in Java

Here is the source code of the Java Program to find the sum of series 1^2+2^2+3^2...+N^2.

Code:

import java.util.Scanner;
public class p3 {

public static void main(String[] args) {

Scanner cs=new Scanner(System.in);
int n,sum=0,i;
System.out.println("Enter the range of number:");
n=cs.nextInt();
for(i=1;i<=n;i++)
sum+=i*i;
System.out.println("The sum of the series = "+sum);
cs.close();
}
}

Input/Output:
Enter the range of number:
25
The sum of the series = 5525

Program in Python

Here is the source code of the Python Program to find the sum of series 1^2+2^2+3^2...+N^2.

Code:

print("Enter the range of number:")
n=int(input())
sum=0
for i in range(1,n+1):
sum+=i*i
print("The sum of the series = ",sum)

Input/Output:
Enter the range of number:
31
The sum of the series =  10416