Question

我有这个功能：

void simul(char *new)
{

    segment_table seg = malloc(sizeof(st));
    segcode newcode = malloc(sizeof(sc));
    int clen = 0;
    seg -> segname = new;
    clen = code_length(seg -> segname);
    seg -> code = read_hexcode(seg -> segname, newcode, clen);
    load_image(seg, clen-3);
    if (strstr(new, "paper_boot-strap loader.hexcode") == NULL)
            run(segment_offset(seg));
}

当我尝试编译程序时，我收到以下错误：

error: ‘st’ undeclared (first use in this function)
error: ‘sc’ undeclared (first use in this function)
error: invalid type argument of ‘->’ (have ‘segment_table’)
error: invalid type argument of ‘->’ (have ‘segment_table’)
error: invalid type argument of ‘->’ (have ‘segment_table’)
error: invalid type argument of ‘->’ (have ‘segment_table’)

我做错了什么？

Answer 1

标头文件，例如<div class="content"> <div class="wrap"> <svg viewBox="0 0 600 300" class="svg-defs">  <symbol id="s-text"> <text text-anchor="middle" x="50%" y="50%" dy=".35em" class="text"> Couture Book </text> </symbol>  <mask id="m-text" maskUnits="userSpaceOnUse" maskContentUnits="userSpaceOnUse"> <rect width="100%" height="100%" class="mask__shape"> </rect> <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#s-text" class="mask__text"></use> </mask> </svg> <div class="box-with-text">  <div class="text-fill"> <video class="video" src="http://tympanus.net/Tutorials/AnimatedTextFills/img/bokeh2.mp4" autoplay="" loop=""></video> </div>  <svg viewBox="0 0 600 300" class="svg-inverted-mask"> <rect width="100%" height="100%" mask="url(#m-text)" class="shape--fill"></rect> <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#s-text" class="text--transparent"></use> </svg> </div> </div> </div>：

header.h

一个源文件

// First an include guard (https://en.wikipedia.org/wiki/Include_guard)
#ifndef HEADER_
#define HEADER_

// Define the structures and their type-aliases
typedef struct st { ... } st;
typedef struct sc { ... } sc;

// Declare a couple of other type-aliases
// (Note that I personally recommend against declaring pointer type-aliases)
// (I personally recommend against using type-aliases for simple types
// like the above structures too)
typedef st *segment_table;
typedef sc *segcode;

// Declare a function prototype
void simul(char *new);

#endif  // HEADER_

第二个源文件

#include "header.h"

void simul(char *new)
{
    ...
}

编译器抱怨＆＃34;' - ＆gt;'＆＃34;的无效类型参数，为什么？

1 个答案: