C语言 代码报错 result_pointer != nullptr

Question

#include<stdio.h>
#define maxn 10
int a[maxn];
int main(void) {
    int x=0, n = 0;
    while (scanf("%d,&x") == 1)
        a[n++] = x;
    for (int i = n - 1; i >= 1; i--)
        printf("%d ", a[i]);
    printf("%d\n", a[0]);
    return 0;
}

请问这段代码在VS上报错是怎么回事

Answer 1

while (scanf("%d,&x") == 1)
->
while (scanf("%d",&x) == 1)