Getting error in Visual C++

[Finchie_88]

I usually use Dev-C++. I've tried this code in Dev-c++, and it works, but I then tried it in Visual C++ and all I got was a program that crashed when it ran. Here is the code.

using namespace std;
int main(int argc, char* argv[])
{
cout << argv[1];
cout << "" << endl;
return 0;
}

[coldfusion244]

why even have the output of an empty string? Just put

cout <<argv[1]<<endl;

As to reasons why it would crash, are you passing the correct variables to the program? Wouldn't it be an invalid pointer if you attmpted to access something that wasn't there (in the case no arguments are passed)?

[Dave Evans]

I usually use Dev-C++. I've tried this code in Dev-c++, and it works, but I then tried it in Visual C++ and all I got was a program that crashed when it ran. Here is the code.
[

Did you give any command-line arguments?

Maybe you could try something like this to see what's happening:

int main(int argc, char* argv[])
{
  cout << "argc = " << argc << endl;
  if (argc > 1) {
    cout << "argv[1] : " << argv[1] << endl;
  }
  return 0;
}

In any case, you shouldn't use argv[x] unless you know that argv[x] is defined.

Programs should never be written in a way that invalid user input can cause a crash.

Regards,

Dave