c - 当我在 Mac OS X 上编译它时，它正在考虑引号 ("%d") 作为未定义的 ascii 符号

Question

例如。当我写这个时-> scanf(“%d”,&newnode->x);

错误是，

list.c:18:7: error: non-ASCII characters are not allowed outside of literals and
      identifiers
scanf(“%d”,&newnode->x);
      ^
list.c:18:10: error: expected expression
scanf(“%d”,&newnode->x);
       ^
list.c:18:12: error: non-ASCII characters are not allowed outside of literals
      and identifiers
scanf(“%d”,&newnode->x);
         ^
list.c:18:11: error: use of undeclared identifier 'd'
scanf(“%d”,&newnode->x);
        ^
4 errors generated.

Answer 1

我相信，您对”(unicode quote, U+201C)的预期"(ascii quote, U+0022)有疑问。它们不是真的一样。

你可以详细阅读差异here .