why there are garbage characters after running the code?

[kaiwei]

I tried to run the code (saved as 1.cpp, see at the end) in my linux:
I input in the terminal:
g++ 1.cpp
Then
./a.out hello.txt

I thought it would output the file of hello.txt. However, the result is that it indeed outputs the file. But before the content of file, there are garbage characters. I just don't know why. Any kind of help would be appreciated!

#include<iostream>
#include<fstream>
#include<string>
using namespace std;
int main(int argc, char** argv){
	int fail_count = 0;
	for(int i = 0; i < argc; ++i){
		ifstream in(argv[i]);
		if(in){
			string s;
			while(getline(in, s))
				cout << s << endl;
		}else {
			cerr << "cannot open file " << argv[i] << endl;
			++ fail_count;
		}
	}
	return fail_count;
}

[helios]

How many characters? Three?

[kaiwei]

@helios
A lot of characters. Then there are 62; 9; c.

[helios]

Oh, now I see it.

argv[0] is the name of the executable. Your loop starts at i == 0, you open the executable on line 8, and you read it as if it was a text file on line 11.