在这段代码中,当第一个数字是二维数组的大小时,我从文件中获取数字。
在我的代码中,我定义
char *filename=new char;
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(我必须使用 char *filename,这是练习..)一切正常,直到我尝试使用delete. 双方delete并delete[]给了我错误和崩溃我的程序。
这是我的完整代码:
#include <iostream>
#include <fstream>
using namespace std;
double **readmat(char *filename, int *size)/////question 2
{
ifstream read(filename);
cout << filename << endl;
if (!read)
{
cout << "Can't open file!" << endl;
exit(1);
}
read >> *size;
double **mat = new double*[*size];
for (int i = 0; i < *size; i++)
{
mat[i] = new double[*size];
for (int j = 0; j < *size; j++) …Run Code Online (Sandbox Code Playgroud) c++ char new-operator dynamic-memory-allocation delete-operator
最近,我不得不在新计算机上重新安装 anaconda。我从anaconda的网站下载了最新版本,并像以前一样安装了它。现在,当我打开 anaconda 界面并尝试运行 Spyder.exe 时,我收到以下消息:
Traceback (most recent call last):
File "C:\Users\aabramzonx0108132\AppData\Local\Continuum\anaconda3\lib\site-packages\qtpy\QtWebEngineWidgets.py", line 22, in
from PyQt5.QtWebEngineWidgets import QWebEnginePage
ImportError: DLL load failed: The specified procedure could not be found.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\aabramzonx0108132\AppData\Local\Continuum\anaconda3\Scripts\spyder-script.py", line
10, in
sys.exit(main())
File "C:\Users\aabramzonx0108132\AppData\Local\Continuum\anaconda3\lib\site-
packages\spyder\app\start.py", line 186, in main
from spyder.app import mainwindow
File "C:\Users\aabramzonx0108132\AppData\Local\Continuum\anaconda3\lib\site-
packages\spyder\app\mainwindow.py", line 90, in
from qtpy import QtWebEngineWidgets # analysis:ignore
File "C:\Users\aabramzonx0108132\AppData\Local\Continuum\anaconda3\lib\site-
packages\qtpy\QtWebEngineWidgets.py", line 26, in …Run Code Online (Sandbox Code Playgroud)