Program to display series and find sum of 1+3+5+........+n.

			#include<stdio.h>
			#include<conio.h>
			void main()
			{
			int n,i,sum=0;
			clrscr();
			printf("Enter any no: ");
			scanf("%d",&n);
			for(i=1;i< n;i=i+2)
			{
			printf("%d+",i);
			sum=sum+i;
			}
			printf("%d",n);
			printf("\nsum=%d",sum+n);
			getch();
			}
Output:
Enter any no: 7
1+3+5+7
Sum=16