Sum of Series||C language||programming_info ||Series problem 2

To find out the sum of series 1+2+...+n

Solution using C language:

1. #include<stdio.h>
2. int main()
3. int n,i;
4. int sum=0;
5. printf("Enter the n i.e. max values of series: ");
6. scanf("%d",&n);
7. sum = (n * (n + 1)) / 2;
8. printf("Sum of the series: ");
9. for (i =1;i <= n;i++) {
10. if (i!=n)
11. printf("%d + ",i);
12. else
13. printf("%d = %d ",i,sum);
14. }
15. return 0;
16. }

Output:

Enter the n i.e. max values of series: 5
Sum of the series: 1 + 2 + 3 + 4 + 5 = 15

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