C程序立即在执行后退出，但它有一个while1循环

问题描述

我正试图在3KB的限制下将c的扫雷程序安装到c中，以便它可以安装在qr代码中，并且在我添加选项-nostdlib并对其进行编译之前，该程序一直运行良好已退出，尽管main中有while（1）循环而无法退出。

我在链接器中添加的库为kernel32，gcc和msvcrt（以防您想重新生成它们）。尽管从技术上讲它确实返回了0x0，这意味着它“成功”，但显然不是。否则就不会那样做。我的代码可以在这里看到：

#include <windows.h>

#define WIDTH 100
#define HEIGHT 100
#define BOMBS 801

int xorshf96(int x,int y,int z)
{
   unsigned long t;
   x ^= x << 16;
   x ^= x >> 5;
   x ^= x << 1;

   t = x;
   x = y;
   y = z;
   z = t ^ x ^ y;

  return z;
}


void ExpandGrid(int fullGrid[WIDTH][HEIGHT],int knownGrid[WIDTH][HEIGHT],int blankPos[2])
{
    int neighbors[8][2] = {{0,1},{1,0},{0,-1},{-1,-1}};
    int curTile[2];

    knownGrid[blankPos[0]][blankPos[1]] = 1;
    if(fullGrid[blankPos[0]][blankPos[1]] != 0) return;

    for(int blck = 0; blck < 8; ++blck)
    {
        curTile[0] = abs(blankPos[0]+neighbors[blck][0]);
        curTile[1] = abs(blankPos[1]+neighbors[blck][1]);
        if(curTile[0] > WIDTH-1 || curTile[1] > HEIGHT-1) continue;

        if(fullGrid[curTile[0]][curTile[1]] == 0 && knownGrid[curTile[0]][curTile[1]] == 0)
        {
            knownGrid[curTile[0]][curTile[1]] = 1;
            ExpandGrid(fullGrid,knownGrid,curTile);
        }
        else if(fullGrid[curTile[0]][curTile[1]] > 0) knownGrid[curTile[0]][curTile[1]] = 1;
    }
}


int main(void)
{
    COORD characterBufferSize = { WIDTH,HEIGHT };
    COORD characterPosition = { 0,0 };
    SMALL_RECT consoleWriteArea = { 0,WIDTH - 1,HEIGHT - 1 };
    CHAR_INFO consoleBuffer[WIDTH][HEIGHT];

    HANDLE wHnd = GetStdHandle(STD_OUTPUT_HANDLE);
    HANDLE rHnd = GetStdHandle(STD_INPUT_HANDLE);

    int num1,num2,num3 = 0;
    SYSTEMTIME systime;

    DWORD numEventsRead = 0;
    DWORD numEvents = 0;
    INPUT_RECORD *eventBuffer;
    int wait = 0;

    SetConsoleTitle("Minesweeper!");

    int startGrid[WIDTH][HEIGHT] = { 0 };
    int knownGrid[WIDTH][HEIGHT] = { 0 };
    int arrowPos[2] = {0,0};
    int bomb[2] = {0,0};

    for (int i = 0; i < BOMBS; i++)
    {
        while (startGrid[bomb[0]][bomb[1]] < -1 || bomb[0] <= 0 || bomb[1] <= 0 || bomb[0] >= WIDTH-1 || bomb[1] >= HEIGHT-1)
        {
            GetLocalTime(&systime);
            num1,num3 = (int) systime.wMilliseconds;

            bomb[1] = (xorshf96(num3,num1) % (HEIGHT-1)) + 1;

            GetSystemTime(&systime);
            num1,num3 = (int) systime.wMilliseconds;

            bomb[0] = (xorshf96(num1,num3) % (WIDTH-1)) + 1;
        }

        startGrid[bomb[0]][bomb[1]] = -9;

        startGrid[bomb[0] + 1][bomb[1] + 1]++;
        startGrid[bomb[0] + 1][bomb[1]]++;
        startGrid[bomb[0]][bomb[1] + 1]++;
        startGrid[bomb[0] - 1][bomb[1] + 1]++;
        startGrid[bomb[0]][bomb[1] - 1]++;
        startGrid[bomb[0] + 1][bomb[1] - 1]++;
        startGrid[bomb[0] - 1][bomb[1] - 1]++;
        startGrid[bomb[0] - 1][bomb[1]]++;
    }

    while(1)
    {
        if (arrowPos[0] > WIDTH-1) arrowPos[0] = WIDTH-1;
        if (arrowPos[0] < 0) arrowPos[0] = 0;
        if (arrowPos[1] > HEIGHT-1) arrowPos[1] = HEIGHT-1;
        if (arrowPos[1] < 0) arrowPos[1] = 0;

        for (int x = 0; x < WIDTH; ++x)
        {
            for (int y = 0; y < HEIGHT; ++y)
            {

                if (knownGrid[x][y] == 1)
                {
                    if (startGrid[x][y] > 0)
                    {
                        consoleBuffer[x][y].Char.AsciiChar = '0' + startGrid[x][y];
                        consoleBuffer[x][y].Attributes = FOREGROUND_GREEN | FOREGROUND_INTENSITY;
                    }
                    else
                    {
                        consoleBuffer[x][y].Char.AsciiChar = 'o';
                        consoleBuffer[x][y].Attributes = (startGrid[x][y] < 0 ? FOREGROUND_RED : FOREGROUND_BLUE) | FOREGROUND_INTENSITY;
                    }
                }
                else
                {
                    consoleBuffer[x][y].Char.AsciiChar = 00;
                    consoleBuffer[x][y].Attributes = FOREGROUND_BLUE | FOREGROUND_INTENSITY;
                }

                if(arrowPos[0] == x && arrowPos[1] == y)
                {
                    consoleBuffer[x][y].Attributes = BACKGROUND_RED | BACKGROUND_BLUE | BACKGROUND_GREEN;
                }
            }
        }

        WriteConsoleOutputA(wHnd,*consoleBuffer,characterBufferSize,characterPosition,&consoleWriteArea);

        numEvents = 0;
        numEventsRead = 0;
        GetNumberOfConsoleInputEvents(rHnd,&numEvents);

        if (numEvents)
        {
            eventBuffer = malloc(sizeof(INPUT_RECORD) * numEvents);
            ReadConsoleInput(rHnd,eventBuffer,numEvents,&numEventsRead);
        }

        if(numEventsRead && wait <= 0)
        {
            wait = 50;
            switch (eventBuffer[0].Event.KeyEvent.wVirtualKeyCode)
            {
                case VK_UP:
                    arrowPos[0]--;
                    break;
                case VK_DOWN:
                    arrowPos[0]++;
                    break;
                case VK_LEFT:
                    arrowPos[1]--;
                    break;
                case VK_RIGHT:
                    arrowPos[1]++;
                    break;
                case VK_RETURN:
                    ExpandGrid(startGrid,arrowPos);
                    break;
            }
        }

        wait--;
    }

}

解决方法

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