对象没有命名类型错误

Posted 2023-02-22

【中文标题】对象没有命名类型错误

【英文标题】：Object doesn't name a type error

【发布时间】：2012-07-31 10:03:08

【问题描述】：

我收到了这个错误

当试图为类播放器制作一个对象时.....

main.cpp|24|error: 'pic' 没有命名类型

这里是代码

这是我的播放器.h

#ifndef PLAYER_H_INCLUDED
#define PLAYER_H_INCLUDED

#include <allegro.h>
#include <iostream>

class player


public:
int upperraw;
int middlerraw;
int lowerraw;
int firstcolumn;
int seccolumn;
int thirdcolumn;
;

   #endif // PLAYER_H_INCLUDED

我的 main.cpp

#include "bitmap.h"
#include "player.h"
#include <allegro.h>
#include <iostream>

int onbitmap=1;
bool turn=true;

BITMAP *my_pic1;
BITMAP *my_pic2;
BITMAP *my_pic3;
BITMAP *my_pic4;
BITMAP *my_pic5;
BITMAP *my_pic6;
BITMAP *my_pic7;
BITMAP *my_pic8;
BITMAP *my_pic9;

player *pic;

pic->upperrow=0;

player *one;
player *two;

static void nextturn()

if(turn==1)

    turn=0;

else

    turn=1;


static void drawsquares()

 my_pic1 = NULL;
my_pic1 = load_bitmap("selected.bmp", NULL);
my_pic2 = NULL;
my_pic2 = load_bitmap("unselected.bmp", NULL);
my_pic3 = NULL;
my_pic3 = load_bitmap("unselected.bmp", NULL);
my_pic4 = NULL;
my_pic4 = load_bitmap("unselected.bmp", NULL);
my_pic5 = NULL;
my_pic5 = load_bitmap("unselected.bmp", NULL);
my_pic6 = NULL;
my_pic6 = load_bitmap("unselected.bmp", NULL);
my_pic7 = NULL;
my_pic7 = load_bitmap("unselected.bmp", NULL);
my_pic8 = NULL;
my_pic8 = load_bitmap("unselected.bmp", NULL);
    my_pic9 = NULL;
my_pic9 = load_bitmap("unselected.bmp", NULL);

draw_sprite(screen, my_pic1, 218,146+65*1);
draw_sprite(screen, my_pic2, 218,146+65*2);
draw_sprite(screen, my_pic3, 218,146+65*3);
draw_sprite(screen, my_pic4, 218+65,146+65*1);
draw_sprite(screen, my_pic5, 218+65,146+65*2);
draw_sprite(screen, my_pic6, 218+65,146+65*3);
draw_sprite(screen, my_pic4, 218+65,146+65*1);
draw_sprite(screen, my_pic5, 218+65,146+65*2);
draw_sprite(screen, my_pic6, 218+65,146+65*3);
draw_sprite(screen, my_pic7, 218+(65*2),146+65*1);
draw_sprite(screen, my_pic8, 218+(65*2),146+65*2);
draw_sprite(screen, my_pic9, 218+(65*2),146+65*3);


    static void replacebitmap(BITMAP *one,BITMAP *two)



static void readakey()

int val=readkey();
switch (val  >> 8)


case KEY_LEFT:



  switch (onbitmap)


    case 1:
    break;
    case 2:
    break;
    case 3:
    break;
    case 4:
    onbitmap=1;


         my_pic4 = load_bitmap("unselected.bmp", NULL);
    draw_sprite(screen, my_pic4, 218,146+65*1);


    my_pic1 = load_bitmap("selected.bmp", NULL);
    draw_sprite(screen, my_pic1, 218,146+65*1);
    clear_keybuf();
   readakey();
   case 5:
     onbitmap=5;

    my_pic5 = load_bitmap("unselected.bmp", NULL);
    draw_sprite(screen, my_pic1, 218,146+65*1);

    my_pic2 = load_bitmap("selected.bmp", NULL);
    draw_sprite(screen, my_pic1, 218,146+65*1);
    clear_keybuf();
   readakey();

   case 6:

         onbitmap=6;

    my_pic5 = load_bitmap("unselected.bmp", NULL);
    draw_sprite(screen, my_pic1, 218,146+65*1);

    my_pic2 = load_bitmap("selected.bmp", NULL);
    draw_sprite(screen, my_pic1, 218,146+65*1);
    clear_keybuf();
   readakey();

     case 7:

         onbitmap=7;

    my_pic7 = load_bitmap("unselected.bmp", NULL);
    draw_sprite(screen, my_pic7, 218,146+65*1);

    my_pic4 = load_bitmap("selected.bmp", NULL);
    draw_sprite(screen, my_pic4, 218,146+65*1);
    clear_keybuf();
   readakey();

            case 8:

         onbitmap=8;

    my_pic8 = load_bitmap("unselected.bmp", NULL);
    draw_sprite(screen, my_pic8, 218,146+65*1);

    my_pic5 = load_bitmap("selected.bmp", NULL);
    draw_sprite(screen, my_pic5, 218,146+65*1);
    clear_keybuf();
   readakey();





int main(int argc, char *argv[])

allegro_init();
install_keyboard();
set_color_depth(32);
set_gfx_mode(GFX_AUTODETECT, 640,480,0,0);
BITMAP *my_pic = NULL;
my_pic = load_bitmap("background.bmp", NULL);
draw_sprite(screen, my_pic, 0,0);

destroy_bitmap(my_pic);
drawsquares();

readakey();

END_OF_MAIN()

【问题讨论】：

这段代码几乎无法阅读。 发布一个说明问题的最小代码，拜托！一般来说，这段代码有很多地方可以改进，但这是一个不同的话题。

【参考方案1】：

你不能在函数之外这样做：

pic->upperrow=0;

您可以声明（并初始化全局变量），但仅此而已。

【讨论】：

可以在函数之外进行，前提是他将内存分配给 pic 指向的位置。因为，upperrow 是公开的。

@amalantony - 真的吗？在 C++ 中？这对我来说是个新闻……（试试这个：ideone.com/5NwTg）

尼姆，对不起。这是我的一个误解。已投票删除我的答案。