C语言scanf卡在while里

Question

#include <stdio.h>

int main(){
    int n,q;
    scanf("%d",&n);
    int a[n],i=0;
    while(~scanf("%d",&q)){
        a[i]=q;i++;
    }
    i--;
    for(;i>0;i--){
        printf("%4d",a[i]);
    }
}

求数字逆置 为什么卡在WHILE里啊

Answer 1

#include <stdio.h>
int main(){
    int n,q;
    scanf("%d",&n);
    int a[n],i=0;
    while(scanf("%d",&q)==1){
        a[i]=q;i++;
    }
    i--;
    for(;i>=0;i--){
        printf("%4d",a[i]);
    }
    return 0;
}