program to get sum of series 1 ,3,5,7,.......nth.

//program  to get sum of series 1 ,3,5,7,.......nth.
#include<stdio.h>
#include<conio.h>
void main()
{
int k,n;
int s=0;printf(enter value of 'n'\n");
scanf("%d",&n);
for(k=1;k<=n;k=k+2)
   {          
       s=s+k;
   }
printf("sum=%d,",s);
getch();
}