Uri/Beecrowd problem no - 1149 solution in C

#include <stdio.h>

int main() {
    int A, N, sum = 0;
    scanf("%d %d", &A, &N);

    while (N <= 0) {
        scanf("%d", &N);
    }

    for (int i = 0; i < N; i++) {
        sum += A + i;
    }

    printf("%d\n", sum);

    return 0;
}