08 连续整数相加

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