1149 Summing Consecutive Integers

URI Online Judge | 1149

Summing Consecutive Integers

Write an algorithm to read a value A and a value N. Print the sum of N numbers from A (inclusive). While N is negative or ZERO, a new N (only N) must be read. All input values are in the same line.

Input

The input contains only integer values, ​​can be positive or negative.

Output

The output contains only an integer value.

Input Sample	Output Sample
3 2	7

3 -1 0 -2 2

7

 Solution:

#include <stdio.h> int main() {     int X, N, i,sum=0;     scanf("%d %d", &X, &N);     while(N<=0)         scanf("%d", &N);     for(i=1; i<=N; i++)     {         sum+=X;         X++;     }     printf("%d\n",sum);     return 0; }