我正在尝试编写生活游戏。当我尝试迭代几代时，我最终得到了垃圾。我尝试了很多不同的东西，但我没有看到我的错误，但显然有一个。任何帮助将不胜感激。当我尝试将游戏的逻辑应用到旧阵列时，我几乎可以肯定我做错了什么，创建新阵列，但我不确定是什么。这是四个功能之一，我测试了其他功能，我很肯定这个缺陷就在这个功能之内。最终目标是让游戏随着每一代的增长而扩展和缩小。
void iterateGeneration ()
{
ifstream fin;
fin.open("tmp.txt");
ofstream fout;
char **arr=new char * [ROWS];
for(int i=0; i<ROWS; i++)
arr[i] = new char [COLUMNS];
int lifecheck=0;
//read in current generation from tmp.txt
for(int i=0; i<ROWS; i++)
{
fin.getline(arr[i], COLUMNS);
}
fin.close();
char **new_arr=new char * [ROWS];
for(int i=0; i<ROWS; i++)
new_arr[i]= new char [COLUMNS];
//count live neighbors, then determine if cell will be alive next generation
for(int i=0; i<ROWS; i++)
{
for(int j=0; j<COLUMNS-1; j++)
{
lifecheck=0;
if((i==0 && j==0) || (i==0 && j==(COLUMNS-2)) || (i==(ROWS-1) && j==0) || (i==(ROWS-1) && j==(COLUMNS-2)))//corners always stay dead
{
lifecheck=0;
}
else if(i==0)//special check for first row, only three checks since neighbors in first row is always dead
{
if(arr[i+1][j-1]=='1')
lifecheck+=1;
if(arr[i+1][j]=='1')
lifecheck+=1;
if(arr[i+1][j+1]=='1')
lifecheck+=1;
}
else if(i==(ROWS-1))//special check for last row
{
if(arr[i-1][j-1]=='1')
lifecheck+=1;
if(arr[i-1][j]=='1')
lifecheck+=1;
if(arr[i-1][j+1]=='1')
lifecheck+=1;
}
else if(j==0)//special check for first column
{
if(arr[i-1][j+1]=='1')
lifecheck+=1;
if(arr[i][j+1]=='1')
lifecheck+=1;
if(arr[i+1][j+1]=='1')
lifecheck+=1;
}
else if(j==(COLUMNS-2))//special check for last column
{
if(arr[i-1][j-1]=='1')
lifecheck+=1;
if(arr[i][j-1]=='1')
lifecheck+=1;
if(arr[i+1][j-1]=='1')
lifecheck+=1;
}
else
{
if(arr[i-1][j-1]=='1')
lifecheck+=1;
if(arr[i-1][j]=='1')
lifecheck+=1;
if(arr[i-1][j+1]=='1')
lifecheck+=1;
if(arr[i][j-1]=='1')
lifecheck+=1;
if(arr[i][j+1]=='1')
lifecheck+=1;
if(arr[i+1][j-1]=='1')
lifecheck+=1;
if(arr[i+1][j]=='1')
lifecheck+=1;
if(arr[i+1][j+1]=='1')
lifecheck+=1;
}
if(arr[i][j]=='0')
{
if(lifecheck==3)
new_arr[i][j]=='1';
else
new_arr[i][j]=='0';
}
else if(arr[i][j]=='1')
{
if(lifecheck==2)
new_arr[i][j]=='1';
else if(lifecheck==3)
new_arr[i][j]=='1';
else
new_arr[i][j]=='0';
}
else
new_arr[i][j]=='0';
}//2nd for
}//1st for
fout.open("tmp.txt");
for(int i=0; i<ROWS; i++)
{
fout << new_arr[i];
fout << endl;
}
for(int p=0; p<ROWS; p++)
{
delete [] arr[p];
delete [] new_arr[p];
}
delete [] arr;
delete [] new_arr;
}
using namespace std;
const int NUM_GENERATIONS = 1; //set to a smaller number for debugging
int main()
{
populateWorld(FILE_NAME);
showWorld();
for (int iteration = 0; iteration < NUM_GENERATIONS; iteration++)
{
if (WINDOWS)
system("cls"); //Windows only
else
system("clear"); //Linux only
iterateGeneration();
showWorld();
}
if (WINDOWS)
system("PAUSE");
return 0;
}
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答案 0 :(得分：0)
您应该显式输出数组的每个字符而不是整个字符数组。
我相信fprintf会像你想要的那样输出一个数组，但是自从我使用c ++以来已经很长时间了。可能自从在高中写一个非常相似的课程以来就没有了。
答案 1 :(得分：0)
您可以在此处保存new_arr：
for(int i=0; i<ROWS; i++)
{
fout << new_arr[i];
fout << endl;
}
在这里，具体来说就是错误：
fout << new_arr[i];
向char *发送ostream会发送连续的字符，直到找到“空终结符”'\0'字符。
您的代码从不设置空终止符，因此很难判断正在编写多少内容。根据你的垃圾结果，它太多了。