在 c++ 中用隨機數拋出異常

Question

我正在嘗試制作一款需要偽隨機數將敵人設置為隨機點的游戲。 所以我嘗試包含stdlib header 文件並使用srand ，然后使用rand為敵人獲取隨機數，我的代碼直到第一個srand看起來像這樣：

#include "pch.h"
#include <iostream>
#include <string>
#include <stdio.h>
#include <stdlib.h>
#include <Windows.h>
#include <time.h>

int screenWidth = 70, screenHeight = 80;

class Enemy {
public:
    int column, lives;
    Enemy() {};
    Enemy(int nColumn, int nLives) {
        column = nColumn;
        lives = nLives;
    }
};
int main()
{
    wchar_t *screen = new wchar_t[screenWidth * screenHeight];
    HANDLE hConsole = CreateConsoleScreenBuffer(GENERIC_READ | GENERIC_WRITE, 0, NULL, CONSOLE_TEXTMODE_BUFFER, NULL);
    SetConsoleActiveScreenBuffer(hConsole);
    DWORD bytesWritten = 0;
    int x = 0, y = 0, width = 10, height = 10;
    std::wstring canvas = L"";
    wchar_t *title = new wchar_t[8];
    wsprintf(title, L"retro shooter");
    SetConsoleTitle(title);
    int enemiesLength = screenWidth / width;
    Enemy* enemies = new Enemy[enemiesLength];
    srand(time(NULL)); // It throws the error at this line
    for (int i = 0; i < enemiesLength; i++) {
        if (rand() % 2) enemies[i] = Enemy(i, 1);
    }
    // the code doesn't end here that's why I didn't put out the closing curly bracket

上面的代碼給了我錯誤/異常：

retroShooter.exe 中的 0x76EDE496 (ntdll.dll) 拋出異常：0xC0000005：訪問沖突讀取位置 0x183A0FA2。

我試過使用向量，但例外是一樣的。 我也試過include -ing cstdlib like: #include <cstdlib>但異常是完全一樣的。 此異常在編譯后拋出，並且在 visual studio 中未標記為錯誤

Answer 1

這可能是問題所在：

wchar_t *title = new wchar_t[8];   // 8 is a lot shorter
wsprintf(title, L"retro shooter"); // than 14