C program to Calculate (1*1) + (2*2) + (3*3) + (4*4) + (5*5) + ... + (n*n) series

Series Program

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Program to Print Number Series in C

In c language you can print any number series. Here i will show you how to print number series in c language with explanation. In case of print number series you need to focus on common difference between two numbers..

C program to Calculate (1*1) + (2*2) + (3*3) + (4*4) + (5*5) + ... + (n*n) series

#include<stdio.h>
int main()
{
    int i,n,sum=0;
    n=10;
    for(i=1;i<=n;i++)
    {
        sum+=i*i;
    }
    printf("Sum: %d",sum);
    return 0;
}

Output:

sum: 385

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,n,sum=0;
    printf("\n Enter n value((1*1) + (2*2) + (3*3) + (4*4) + (5*5) + ... + (n*n)):");
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
        sum+=i*i;
    }
    printf("Sum: %d",sum);
    return 0;
}

Output:

Enter n value((1*1) + (2*2) + (3*3) + (4*4) + (5*5) + ... + (n*n)):20
Sum: 2870
Process returned 0 (0x0)   execution time : 2.586 s

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