program to get sum of given series with ..................nth terms.

//program to get sum of 1²x1+2³x3+3⁴x5+..............................nth terms.
#include<stdio.h>

#include<conio.h>

void main()
{
   float i,n,k=2,m=1sum=0;

   printf("enter  positive number for 'n'\n");
  scanf("%f",&n);

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

          sum=sum+(pow(i,k)*m);

           k=k+1;

           m=m+2;

     }

  printf("the sum=%f",sum);

getch();
}

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logics in mind:
->enter a number for range for which you want to get sum, say 'n'.

->let a variable 'sum' with initial value '0'

->we get sum using formula sum=sum+(pow(i,k)*m) because in terms 1²x1+2³x3+3⁴x5+..     ,

        the first value is i(1),second is k(2) and third is m(1).the values in second and all other terms are changing 

   i----by 1
   k by 1
  m by 2     
  so

        we put these values  inside loop.

->at last we display final sum.