[theholygod]

Hi

What I am trying to do is fetch a filename in my code, but I'm having trouble getting my head around chars and strings. Here's what I have so far:

string fileno(string name){
	int arraySize = sizeof(name);
	int start = 0;
	int end = arraySize - 1;
	string number = "";

	for(int i = 0; i < arraySize; i++){
		if(name[i] == "/"){
			start = i;
		}else if(name[i] == "."){
			end = i;
		}
	}

	for(int i = start; i <= end; i++){
		number = number + name[i];
	}

	return(number);
}

int main(int argc, char *argv[])
{
	string filename = fileno(argv[1]);
	return 0;

}

The errors I'm getting complain that const char * can't be converted to int. What am I doing wrong?


On a secondary note, is there a reason why taking file input on the main function (the argc, argv stuff) would stop ofstream from working? If so, how can I get around it?

[sarmanu]

 if(name[i] == "/"){
                        start = i;
                }else if(name[i] == "."){
                        end = i;
                }

You do not need double quotes when dealing with char:

if(name[i] == '/')
{
    start = i;
} 
else if(name[i] == '.')
{
    end = i;
}

That should work.

This post has been edited by sarmanu: 05 March 2010 - 10:36 AM

[bodom658]

use single quotations ( '' ) in your if statements. "i" is not the same as 'i'

[jjl]

you want to use a function class find_last_of() from std::string

look

string fileno(const string &name)
{ 
	size_t found;
	found = name.find_last_of("/\\");
	cout<<"FOLDER : "<<name.substr(0,found)<<endl
	    <<"FILE : "<<name.substr(found+1)<<endl;
	
	return name.substr(found+1); //return filename
} 

[theholygod]

I knew C++ was picky but damn, ' instead of ". What is the reasoning behind that?

Thanks ImaSexy, but I don't fully understand what you've put. I'm not very good at all with C++ and I was having enough trouble with my approach.


You guys have absolutely no idea why drag-n-drop file input would interrupt ofstream?

This post has been edited by theholygod: 05 March 2010 - 11:01 AM

[sarmanu]

Single quotes are encoding a SINGLE character, where double quotes encodes an ARRAY OF CHARACTERS (a string). Example:

char X = 'd'; // X is a char, holding one character
std::string str = "something"; // double quotes used, telling us that there is more than one character in str
std::string str2 = "x"; // a string containing one character, this differs from char data type. How to convert this to a char? Use char X = str2[0].

[theholygod]

Thanks very much

[theholygod]

Ok, I've done a little bit of reading and I think the reason my ofstream isn't working is because I am already using a stream to read the dragged file.

Can someone point me in the right direction to solve this?

[theholygod]

Found the problem, thanks anyway.

[taylorc8]

int arraySize = sizeof(name);

shouldn't that be name.size() ?