I was used to use Matlab, and for very long simulation I created a function which sent me an email whenever Matlab finished. It was a very easy Matlab function, you just had to add your email, password and the SMTP (I think).
Now, because of university stuff, I have to use C++ (I'm not very familiar with it, as you have probably guessed) but I can't find an equivalent way for sending an email to myself.
I compile my .cpp in Terminal, using g++.
Can you please help me? I don't know if I miss some libraries or what.
If you want to do this in C++ it would be the best to go for some library like
libquickmail
vmime
If it is ok for you to call some other program (like linux terminal program) go and check this stackoverflow answers send-mail-from-linux-terminal-in-one-line
Using the last method will leave with you with something like that (minimal example):
#include <stdio.h>
#include <stdlib.h>
int main(int argc,char* argv[]){
int status;
status = system(R"(echo "this is the body" | mail -s "this is the subject" "to#address")");
return 0;
}
R"()" is c++ string literal so you don't have to care about escape characters (but is available since C++11).
Here see the documentation for system to check how it work.
Related
I use MinGW64 to compile c++ programs. But since I upgraded to Windows 10, I found my c program output Chinese will be garbled code.
I follow the online method, adding a code in the program header: SetConsoleOutputCP(65001);, then it fixes. but I think it's so troublesome to do this for each c++ program. What should I do?
I think this is my system's problem, the same code in Windows 7 is not a problem, I just want to find a more convenient solution instead of adding the same code to every file
There's the code:
#include <iostream>
#include <windows.h>
using namespace std;
int main()
{
SetConsoleOutputCP(65001);
cout << "文本" ; //Output will be garbled code if there's no line above
return 0;
}
The console in most operating systems only expects ASCII character input. In order to show some other char set you have to specify that in your code. The SetConsoleOutputCP command sets the "code page" windows should read from. By the way not all versions of windows have the same code for this command.
Please refer to the documentation found here.
The documentation suggests using EnumSystemCodePages to make sure the code for that language exists on that system.
P.S.
Your English is very good :)
EDIT
I tested your code on my computer with Visual Studio 2019 and got the following
Warning C4566 character represented by universal-character-name '\u6587' cannot be represented in the current code page (1255)
even with the SetConsoleOutputCP command you added. I assume you need to have chines installed for this to work. The problem is that I don't have the relevant code page for the windows console to look in for the char set. see this answer and this answer.
I am trying to write a simple C++ program that sends an SMS message out based on its input from the user. The simple C++ program fails to do the job:
#include<stdio.h>
#include <stdlib.h> /* system, NULL, EXIT_FAILURE */
#include<iostream>
#define CTRL(x) (#x[0]-'a'+1)
using namespace std;
int main()
{
char buffer[128];
sprintf(buffer, "/opt/modemcli AT+CMGC=\"+112345678\"\rTEST%c", CTRL(z));
printf (buffer);
system(buffer);
return 0;
}
modemcli is just a simple C++ program that writes messages to the USB port and reads the response.
modemcli is simple, here is a test:
/opt/modemcli AT
Received AT
OK
My guess is CMGC is not formed properly. The format is:
AT+CMGC="PHONE_NUMBER"<CR>SMS MESSAGE BODY.<Ctrl+z>
Can someone please help me figure this out?
First of all, I think you want to use the AT+CMGS command, not AT+CMGC. Check out the description of each command in 27.005 to see if you really want AT+CMGC. But before reading that document, read all of chapter 5 in V.250, that will teach you all the basics for AT command handling you need.
What you are attempting is impossible to do by using a generic command line program for sending AT command like modemcli or my atinout program. In order to run AT+CMGS on a modem, the program issuing it must have explicitly support for this specific AT command's behaviour.
This is because the need to wait for the "ready to receive" prompt from the modem before sending the payload. See the first part of this answer for details.
I have started working on a companion program to atinout specifically to handle AT+CMGS, but it is not done yet and do not hold your breath, the development is currently on hold.
I tried making a program that'd take website info, then feed it to system() to start website. I'm aware that characters like (\, ",') don't get fed to the output directly, so I used escape sequences.
I wrote this program, but the command prompt just refuses to go past C:\ path. But if I copy paste the command displayed by my program, internet explorer gets launched. But the case isn't so for my program. Can anybody tell me where is the error?
Here is my code:
#include<iostream>
#include<cstdlib>
using namespace std;
int main()
{
cout<<"Please enter the website you wish to visit: ";
string website,web;
cin>>web;
web= " " + web;
website = "\"%ProgramFiles%\\Internet Explorer\\iexplore\""+web;
cout<<"\n"<<website<<endl<<endl<<endl;
system(website.c_str());
return 0;
}
You are using an environment variable, %ProgramFiles%, in your system command-line; these are specific to the MS-DOS prompt environment, and generally not available in system implementations.
I suggest replacing that with the full path, such as \"C:\Program Files\Internet Explorer\iexplore\", and see if that works.
If that works, then your implementation doesn't implicitly replace environment variables the way a full Command Prompt does, so you will need to query the environment variable separately and construct the path before you run system. See getenv for one possible way (I'm not sure what mingw32 supports, so you may have other options as well).
If that doesn't remedy the problem, I suggest checking if you can launch something simpler, like notepad.exe, to verify that there is nothing interfering with launching an application in general, such as your environment path or permissions.
Pass it in double double quotes:
website = "\"\"%ProgramFiles%\\Internet Explorer\\iexplore\"\""+web;
The system("something") call actually runs the command interpreter cmd in a way similar (but probably not identical) to cmd /c something. This has implications when there are spaces in the command name, see e.g this. I cannot tell exactly why single double quotes work when there's no environment variable involved, and do not work otherwise, but the fact is, double double quotes do work.
If you want to launch the user's preferred browser, consider calling
system("start http://" + websitename);
instead.
Get that environment variable value first.
#include <iostream>
#include <ShlObj.h>
int main() {
char pathToPf[MAX_PATH];
if (S_OK == SHGetFolderPathA(NULL, CSIDL_PROGRAM_FILES, NULL, 0, pathToPf))
std::cout << pathToPf << std::endl;
return 0;
}
See SHGetFolderPath documentation...
Note that I was lazy and using the ASCII version of this function. Use it without the A postfix and deal with the conversation ;)
I was just toying around with making a basic chess engine. I was able to get a lot of advice from http://web.archive.org/web/20070704121716/http://www.brucemo.com/compchess/programming/alphabeta.htm, but the real site is down and not all the pages are archived. (Anyone know where to find a full version of Bruce's site?)
But now to the real question: how do I communicate with XBoard? I understand it is via stdin and stdout, but I've been having problems in code. Basically, to get started, I just want to
receive input from XBoard and print it to the console/screen
Give a move of hard-coded input to XBoard and have it make the move
program utility functions and have a random chess ai which chooses random moves.
After that, I can start implementing real things like alpha-beta searching.
I am stuck on the first two things right now. Here is some code I have tried to write/borrowed.
#include <iostream>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#define STR_BUFF 256
using namespace std;
int main (int argc, const char * argv[])
{
char input[STR_BUFF];
char output[STR_BUFF];
while(true){
fflush(stdout);
// read input
if (!fgets(input, STR_BUFF, stdin)){
printf("terminated");
return 0;;
}
printf("%s", input);
}
return 0;
}
I am just getting back into C after about 6 months break and this is the first project that I have used stdin/stdout pipelines to communicate with another program (minus a few basic programs) so I would appreciate any help and any explanations. I know programming a chess engine is a herculean task, but I have already programmed the rules of chess before and what I can find of Bruce's site is absolutely amazing.
You are doing it almost right: get a command from XBoard with fgets, then report a move with printf and fflush. (One thing is wrong, though: you don't need to 'print the command to the console/screen'; you are not communicating with the console/screen; you only read commands from XBoard and send moves back to XBoard).
Probably, it would be easier to start with some existing code. Try to read sources for GNU Chess. Or download sources for any other chess engine, supporting XBoard protocol.
And here is other question with lots of information on chess engine programming: "What are some good resources for writing a chess engine?".
I think that you're looking for pipe(), included in unistd.h. Take a look at Can popen() make bidirectional pipes like pipe() + fork()? for notes on implementation.
I have written some basic c++ programs in one of my classes for school. I was wondering if it was possible to somehow virtually run the program in a broswer. I would like to post the program to my website. Once its posted, a person could access the program, run the program, and, interact with the program. I'm not trying to write C++ for my website, it would be more for an interactive portfolio.
Is this possible?
Use codepad, a website which lets you compile and share code online.
#include <iostream>
int main(int argc, char** argv) {
std::cout << "Hello, Stack Overflow!" << std::endl;
return 0;
}
There is also Google Native Client SDK that allows C++ code to run in browser. Microsoft Active X is also a viable option. I am only saying it is possible not recommended.
You can only run the program on your server, not on the client's machine.
At least not without downloading and manually executing it. Anything else would be an open door for malware...
I see two options, but both very overkill:
Write (or find) a C++ interpreter in JavaScript
Use a VM running an operating system (e.g. jslinux and demonstrate your programs there.
The sensible option is to just give people a way to view and download the source code, I guess.
Google chrome supports this: http://www.readwriteweb.com/cloud/2011/08/google-officially-announces-cc.php
But it's by no means "mainstream" or standards-based.
Another solution (codepad like) would be to use https://ideone.com/ which seems much nicer to use than codepad, more user-friendly, but does the same:
Allow you to write C++ (60 languages possibles) directly from the browser and compile it and render result in the browser (I tried using printf and it worked fine). Possibility of forking source code.
https://ideone.com/baYzfe
The following two programs are quite useful :
1) Ideone
2) Codepad
You can compile, run, and share code online in any browser.
You can use Emscripten to compile C++ to Javascript. Emscripten can compile LLVM bitcode to Javascript. Some demos of Emscripten can be found here, including a raytracer and a text-to-speech engine that was compiled from C++ to Javascript.
To run x86 binaries in a web browser, you could also use an emulator such as v86. This is one possible way to compile and run C++ programs in a browser.
One of the best sites for running C++ and other multiple languages online is Repl.it
This example: repl.it/#abranhe/stackoverflow
#include <iostream>
int main() {
std::cout << "Hello Stackoverflow\n";
return 0;
}
One of the biggest pros it has is that you can work with multiple files, working with header (header.h) files etc. None of the below websites provide this option:
Codepad.org
JSLinux
IDEone
I really recommend it! You will love it!
Also wanted to add Google Colab here as an option:
Cell 1:
%%writefile hello.cpp
#include <iostream>
int main(int argc, char** argv) {
std::cout << "Hello, Stack Overflow!" << std::endl;
return 0;
}
Cell 2:
%%script bash
g++ hello.cpp -o test
ls -laX
./test