Cout prints address instead of string?

[sting777]

The following code prints the address instead of a string in VC ++ 2010 I'm new do I have to do a conversion, is this a bug with VC++?

cout<<"usage: "<< argv[0] <<" <filename>\n";

I copied it from this example here:

Cprogramming.com Tutorial: Command-Line Arguments

[MK27]

Ouch. How about when you run the exe outside of VC? Does this code do the same thing?

#include <iostream>

using namespace std;

int main(int argc, const char *argv[]) {
	cout << "--> " << argv[0] << endl;
	return 0;
}

[Salem]

Maybe you mis-declared argv?

Post your actual code, post your actual output, post your compiler log.

[sting777]

Here's the code, I made it as simple as possible, just run the exe and get the error, and it prints the address, I also swapped cerr with cout and still got the same error.

int _tmain(int argc, _TCHAR * argv[])
{
	if (argc == 1)
	{
		cerr << "Usage : " << argv[0] << " filename[s]\n";
	exit(1);
	}
}

[MK27]

Well, this part is very non-standard:

int _tmain(int argc, _TCHAR * argv[])

Did you try the program I posted in post #2?

[sting777]

Well, this part is very non-standard:

int _tmain(int argc, _TCHAR * argv[])

Did you try the program I posted in post #2?

Your code worked!

[sting777]

Oops new problem, the code now crashes at the end of the program, the program finishes and then I get an error in the visual C dll.

[EVOEx]

Oops new problem, the code now crashes at the end of the program, the program finishes and then I get an error in the visual C dll.

Post the entire program (or at least the smallest program that causes the problem) in here. Or, since it's barely related to this post, do so in a new thread. You probably have a buffer overflow or something similar.

[Salem]

So in other words, _TCHAR is declared as a wide character on your UNICODE enabled build.

Read your compiler documentation to see how you can cout a TCHAR (regardless of UNICODE mode).

[sting777]

So in other words, _TCHAR is declared as a wide character on your UNICODE enabled build.

Read your compiler documentation to see how you can cout a TCHAR (regardless of UNICODE mode).

I still have address issues with some parts of the code, note that this code is just me tooling around with reading files.

The main function is in rput_readfile, the line that prints addresses is:

cout << ar[0] << "   " <<  ar[1] <<  "     " << ar[2] << "   " << ar[3] << " \n";

When switching from cout to wcout I get a crash when the program finishes.

void rput_readfile(int a, _TCHAR * ar[])
{
     int elapTicks;
     double elapMilli, elapSeconds, elapMinutes;
     clock_t Begin, End;             //initialize Begin and End for the timer

	 /*
     Begin = clock() * CLK_TCK;      //start the timer  
     for(int a=1; a<=10000; a++);
     End = clock() * CLK_TCK;        //stop the timer 
     */   
     
    

	ifstream fin;
	ofstream fout;
	
	long count;
	long total = 0;
	char ch;

	int spaces=0;
	int newlines=0;
	for (int file = 1; file < a; file++)

	{
		Begin = clock() * CLK_TCK;
		fin.open(ar[file]);
		
		count = 0;
		fout.open("stupid");
		while (fin.get(ch))
		{
			while(!fout.put(ch));
			
			if (ch ==' ')
				spaces++;
			else if (ch == '\n')
				newlines++;
			count++;
		}
		cout << count << " characters in \n" ;
		wcout << "Argument 1 : " << ar[1] << " \n";
		total +=count;
		fin.clear();
		fin.close();
		fout.close();
	
	}
	End = clock() * CLK_TCK; 
	cout << ar[0] << "   " <<  ar[1] <<  "     " << ar[2] << "   " << ar[3] << " \n";
	cout << total << " characters in all files\n";





	 elapTicks = End - Begin;        //the number of ticks from Begin to End
     elapMilli = elapTicks/1000;     //milliseconds from Begin to End
     elapSeconds = elapMilli/1000;   //seconds from Begin to End
     elapMinutes = elapSeconds/60;   //minutes from Begin to End
     
     
     if(elapSeconds < 1)
          cout<<"\n\nIt took "<<elapMilli<<" milliseconds.";
     else if(elapSeconds == 1)
          cout<<"\n\nIt took  1 second.";
     else if(elapSeconds > 1 && elapSeconds < 60)
          cout<<"\n\nIt took  "<<elapSeconds<<" seconds.";
     else if(elapSeconds >= 60)     
          cout<<"\n\nIt took  "<<elapMinutes<<" minutes.";




	 double meg_sec = 0;
	 double total1 = 0;
	 total1 = total / 1000000;
	 meg_sec = total1 / elapSeconds;
	 cout <<"\nMegs per second was " << meg_sec;

	 printf ("\nDecimals: %d  %ld\n", meg_sec, total);
	 cout << "\nSpaces were: " << spaces << " Newlines were: " << newlines;
	 
	 cout << "\n";
}


int _tmain(int argc, _TCHAR* argv[])
{
	if (argc == 1)
	{
		wcout << "Usage : " << argv[0] << " filename[s]\n";
	exit(1);
	}

	rput_readfile(argc, argv);

	 return 0;
}