如何在崇高文本3中输入C程序？

Question

>>> address.contents
["1 McDonalds Dr", <br/>, 'OAK BROOK, IL 60523-1911', <br/>, "United States"]
>>> result = address.contents[-1]
>>> result
"United States"

当我在SUBLIME文本3中编写此代码时，它显示如下错误：

 #include<stdio.h>
 int main()
 {
    int n;
    scanf("%d",&n);
    printf("%d\n",n );
    return 0;
  }

有什么问题？