It is easy to get sum of series 1 – 2 + 3 – 4 + . . . + n in C program. In this tutorial, I’ll show you how to do it in easy way in C program. Here is a simple code for it:
printf("Enter the value of n of the series: ");
printf("Sum of the series: ");
for (i =1; i <= n; i++)
printf("%d = %d ",i,s);
printf("%d + ",i);
printf("%d - ",i);
Enter the value of n of the series: 10
Sum of the series: 1 - 2 + 3 - 4 + 5 - 6 + 7 - 8 + 9 - 10 = -5
In above code, I have tried to show number, plus sign, result and in a word equation by iterating from 2 to n using for loop by incrementing 2 and as well as summing up the series in the iteration.
In this tutorial, I have shown how to get sum of series 1 – 2 + 3 – 4 + . . . + n in C Program. Hope you have enjoyed the tutorial. If you want to get updated, like the facebook page http://www.facebook.com/freetechtrainer and stay connected.