I need help.
I installed Visual Studio Code, then I installed the latest version of MingW for C++ programming.
When I try to run the program, show this
[Running] cd "d:\projects\helloword" && g++ helloword.cpp -o helloword && "d:\projects\helloword"helloword
'g++' �����ڲ����ⲿ���Ҳ���ǿ����еij���
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[Done] exited with code=1 in 0.042 seconds
#include <iostream>
#include <vector>
#include <string>
using namespace std;
int main()
{
vector<string> msg {"Hello", "C++", "World", "from", "VS Code", "and the C++ extension!"};
for (const string& word : msg)
{
cout << word << " ";
}
cout << endl;
return 0;
}
Related
I am on windows 11 using VScode to run a C++ code with ming-w64.
I have installed ming-w64 following all these steps
I am running a code that has a deliberate memory leak to see if there is a report by _CrtDumpMemoryLeaks().
this is my code:
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>
#include <iostream>
#ifdef _DEBUG
#define DBG_NEW new ( _NORMAL_BLOCK , __FILE__ , __LINE__ )
// Replace _NORMAL_BLOCK with _CLIENT_BLOCK if you want the
// allocations to be of _CLIENT_BLOCK type
#else
#define DBG_NEW new
#endif
using namespace std;
int main()
{
_CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
_CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_DEBUG );
_CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDOUT );
_CrtSetReportMode( _CRT_ERROR, _CRTDBG_MODE_FILE );
_CrtSetReportFile( _CRT_ERROR, _CRTDBG_FILE_STDOUT );
_CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_FILE );
_CrtSetReportFile( _CRT_ASSERT, _CRTDBG_FILE_STDOUT );
int *i2 = new int(2);
cout << "address of i2 :" << i2 << endl;
bool check = _CrtDumpMemoryLeaks();
cout << "MEMORY check :" << check << endl;
cout << "After CrtDumpMemoryLeaks" << endl;
}
This is the TERMINAL:
PS C:\Users\שראל\Desktop\C_proj\projects\helloworld> & 'c:\Users\שראל\.vscode\extensions\ms-vscode.cpptools-1.9.7\debugAdapters\bin\WindowsDebugLauncher.exe' '--stdin=Microsoft-MIEngine-In-o0zd5lqu.up2' '--stdout=Microsoft-MIEngine-Out-gva0ndx0.ycm' '--stderr=Microsoft-MIEngine-Error-eec2m2xg.4x5' '--pid=Microsoft-MIEngine-Pid-fakhxofs.oyp' '--dbgExe=C:\msys64\mingw64\bin\gdb.exe' '--interpreter=mi'
address of i2 :0x190a9ff1a90
MEMORY check :0
After CrtDumpMemoryLeaks
And the OUTPUT is empty.
I don't understand what I am doing wrong here.
I have authored the following Hello World C++ example...
#include <iostream>
using namespace std;
int main(){
cout << "Hello World!";
return 0;
}
...however, I am getting the following error message.
"e:\reality\visual studio\" && g++ first.cpp -o first && "
e:\reality\visual studio\"first
c:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../libmingw32.a(main.o):
(.text.startup+0xa0): undefined reference to `WinMain#16'
collect2.exe: error: ld returned 1 exit status
I am using 'https://github.com/microsoft/cpprestsdk' v2.8 and trying to handle interrupt signal but 'cpprest/http_listener.h' gives segmentation fault.
If I comment out line no 3( #include <cpprest/http_listener.h>) server gets stop without any segmentation fault.
My code snippet is as below
#include <iostream>
#include <cpprest/http_listener.h>
void signal_handler(int signal) {
std::wcout<<"Exiting the program... ::" << signal << std::endl;
exit(EXIT_SUCCESS);
}
int main(int argc, char** argv) {
//Registring a signal handler to prevent abrupt exits
std::signal(SIGINT, signal_handler);
try {
while (true);
}
catch (std::exception const & e) {
std::wcout << e.what() << std::endl;
}
return 0;
}
Versions used :
OS - Linux 16.04
CPP REST version - 2.8
G++ version - 7.5.0
Command to compile above code snippet - g++ test.cpp -o spike_op1 -lcpprest -lssl -lcrypto -lpthread
So there is issue in cpprest/http_listener.h file, does anyone have it's solution?
I am trying to get connected to Postgres database via Dev-c++ (Windows application and not console) for executing queries, but I am continuously getting errors.
I went through the following link:
http://www.tutorialspoint.com/postgresql/postgresql_c_cpp.htm
and added the below code to that of mine:
#include <iostream>
#include <pqxx/pqxx>
using namespace std;
using namespace pqxx;
int main(int argc, char* argv[])
{
try{
connection C("dbname=testdb user=postgres password=cohondob \
hostaddr=127.0.0.1 port=5432");
if (C.is_open()) {
cout << "Opened database successfully: " << C.dbname() << endl;
} else {
cout << "Can't open database" << endl;
return 1;
}
C.disconnect ();
}catch (const std::exception &e){
cerr << e.what() << std::endl;
return 1;
}
}
But got error stating:
'No such file or directory
#include
Compilation terminated'
Please, Can anyone help me get through this?
is there any other possible way to get connected?
I've written simple program.
Here a code:
#include <iostream>
#include <stdio.h>
#include <D:\Program Files\PostgreSQL\8.4\include\libpq-fe.h>
#include <string>
using namespace std;
int main()
{
PGconn *conn;
PGresult *res;
int rec_count;
int row;
int col;
cout << "ble ble: " << 8 << endl;
conn = PQconnectdb("dbname=db_pm host=localhost user=postgres password=postgres");
if (PQstatus(conn) == CONNECTION_BAD) {
puts("We were unable to connect to the database");
exit(0);
}
}
I'm trying to connect with PostgreSQL.
I compile this code with following command:
gcc -I/"d:\Program Files\PostgreSQL\" -L/"d:\Program Files\PostgreSQL\8.4\lib\" -lpq -o firstcpp.o firstcpp.cpp
This command is from following site:
http://www.mkyong.com/database/how-to-building-postgresql-libpq-programs/
And when I compile it I get following error:
/cygnus/cygwin-b20/H-i586-cygwin32/i586-cygwin32/bin/ld: cannot open -lpq: No such file or directory
collect2: ld returned 1 exit status
Does anyone help me?
Difek
You can try using forward slashes instead of backward slashes. And I have no idea about the first forward slash. Isn't it meant to be inside the quotes ? Eg -I"/d:/Program Files/PostgreSQL/"
Anyway, if you are using the gcc from cygwin, you could also try
-I"/cygdrive/d/Program Files/PostgreSQL"
And I'd do the same with that include (libpq-fe) - though apparently that is working, the error is in the linker.