对象未命名类型错误

Question

我收到这个错误

当试图为类播放器制作对象时。。。。。

main.cpp|24|错误："pic"未命名类型

这是代码

这是我的球员。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

我的主.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()

Answer 1

您不能在函数之外执行此操作：

pic->upperrow=0;

您可以声明（并初始化全局变量），但仅限于此。