#include<iostream.h>
#include<conio.h>
#include<conio.h>
void main()
{
clrscr();
int n,i;
long sum=0;
cout<<“1^2+3^2+5^2+……+n^2nn Enter Value of n:”;
cin>>n;
for(i=1;i<=n;i+=2)
sum+=(i*i);
cout<<“n Sum of given series is “<<sum;
getch();
}
//Here is another way if anyone is interested….It is based on sumation of certain types of series.
#include
#include
void main()
{
clrscr();
int n,sum;
cout<>n;
sum = ( ((2 * n) – 1) * (((2 * n) – 1)+ 1) * ( ( 2 * ((2 * n) – 1) ) + 1 ) ) / 6;
cout<<"The sum is:"<<sum;
getch();
}