相关疑难解决方法(0)

引自这里,

在C中,有两种不同的类型名称空间:struct/union/enum标记名称的名称空间和typedef名称的名称空间.

name.c

$ cat name.c
#include<stdio.h>

typedef long long long2;

int long2 () {
    return 4;
}

int main() {

    printf("hello, world!");
    return 0;
}
$ gcc name.c -o name
name.c:4: error: 'long2' redeclared as different kind of symbol
name.c:3: error: previous declaration of 'long2' was here
$

name2.c

$ cat name2.c
#include<stdio.h>

int four() {
    return 4;
}

struct dummy {
    int member;
};

int main() {

    struct dummy four;
}

$ gcc name2.c -o name2 …