小编Lam*_*daG的帖子

我希望一些共享变量应该在源文件main.c和secondary.c之间访问，我的头文件是all.h定义了共享数据类型，

#ifndef ALL_H
#define ALL_H
struct foo {
    double v;
    int i;
};

struct bar {
    double x;
    double y;
};
#endif

main.c如下

/* TEST*/
#include "all.h"
#include "second.h"

int main(int argc, char* argv[])
{
    struct foo fo; // should be accessed in second.c
    fo.v= 1.1;
    fo.i = 12;

    struct bar ba; // should be accessed in second.c
    ba.x= 2.1;
    ba.y= 2.2;

    sec(); // function defined in second.c

    return 0;
}

下面给出了secondary.h

#include …