Line 180-183 NEED HELP Vector Element ERASE

[nameishi]

#include<iostream> 
#include<fstream>
#include<vector>
#include<string>
#include<cmath>

#define ifile "input1.txt"
#define ofile "out.txt"

using namespace std;
string scan( ifstream&);//prototype
void findVector(string, vector<string>&, ofstream&);
void openTagStow(string, vector<string>&,ofstream&);//prototype
void closeTagStow(string, vector<string>&,ofstream&);//prototype
void arrayStow(string, int, string[],ofstream&);//prototype
string openTagScan(string, ifstream&);//prototype
string closedTagScan(string, ifstream&);//prototype



string openTagScan(ifstream&infile) {
	string temp, nothing, hold;
	getline(infile, temp, '<');
	getline(infile, hold, '>');

	if (hold == "HTML") {
		return '<' + hold + '>';
	}
	else if (hold == "HEAD") {
		return '<' + hold + '>';
	}
	else if (hold == "TITLE") {
		return '<' + hold + '>';
	}
	else if (hold == "BODY") {
		return '<' + hold + '>';
	}
	else if (hold == "P") {
		return '<' + hold + '>';
	}
	else if (hold == "IMG SRC='http://image.jpeg'") {
		return '<' + hold + '>';
	}
	else if (hold == "CENTER") {
		return '<' + hold + '>';
	}
	else if (hold == "BR") {
		return '<' + hold + '>';
	}
	else if (hold == "H1") {
		return '<' + hold + '>';
	}
	else if (hold == "H2") {
		return '<' + hold + '>';
	}
	else if (hold == "H3") {
		return '<' + hold + '>';
	}
	else if (hold == "H4") {
		return '<' + hold + '>';
	}
	else if (hold == "H5") {
		return '<' + hold + '>';
	}
	else if (hold == "H6") {
		return '<' + hold + '>';
	}
	else
		return nothing;

}
string closedTagScan(ifstream&infile) {
	string temp, nothing, hold;
	getline(infile, temp, '<');
	getline(infile, hold, '>');

	if (hold == "/HTML") {
		hold = "HTML";
		return '<' + hold + '>';
	}
	else if (hold == "/HEAD") {
		hold = "HEAD";
		return '<' + hold + '>';
	}
	else if (hold == "/TITLE") {
		hold = "TITLE";
		return '<' + hold + '>';
	}
	else if (hold == "/BODY") {
		hold = "BODY";
		return '<' + hold + '>';
	}
	else if (hold == "/P") {
		return '<' + hold + '>';
	}
	else if (hold == "/IMG SRC='http://image.jpeg'") {
		return '<' + hold + '>';
	}
	else if (hold == "/CENTER") {
		hold = "CENTER";
		return '<' + hold + '>';
	}
	else if (hold == "/BR") {
		return '<' + hold + '>';
	}
	else if (hold == "/H1") {
		hold = "H1";
		return '<' + hold + '>';
	}
	else if (hold == "/H2") {
		hold = "H2";
		return '<' + hold + '>';
	}
	else if (hold == "/H3") {
		hold = "H3";
		return '<' + hold + '>';
	}
	else if (hold == "/H4") {
		hold = "H4";
		return '<' + hold + '>';
	}
	else if (hold == "/H5") {
		hold = "H5";
		return '<' + hold + '>';
	}
	else if (hold == "/H6") {
		hold = "H6";
		return '<' + hold + '>';
	}
	else
		return nothing;

}
//passing in vector and valid string..in which i want to store into vector
//open stores open tags into vector  Via Close does for its on vector
void openTagStow(string open, vector<string>& openVector,ofstream&outfile) {
	openVector.push_back(open);
	
	cout << "Open : " << openVector.back()<<endl;

}
void closeTagStow(string close, vector<string>&closeVector, ofstream&outfile) {
	//openVector.insert(openVector.begin(),open;
	//cout << openVector.begin() << endl; get error no mathes these operands

	closeVector.push_back(close);
	cout << "Close : " << closeVector.back() << endl;

}

void arrayStow(string hold, int i, string arr[],ofstream&outfile) {//takes string stores into array(works)

	arr[i] = hold;
	cout << arr[i] << endl;//verified being stored correctly
	outfile << arr[i] << endl;

}
string scan( ifstream&infile) {//scans file for specific <P><BR><IMG...> (works)
	string hold,temp;
	string nothing;


	getline(infile, temp, '<');
	getline(infile, hold, '>');

	if (hold == "P") {
		return '<' + hold + '>';
	}
	else if (hold == "BR") {
		return '<' + hold + '>';
	}
	else if (hold == "IMG SRC='http://image.jpeg'")
	{
		return '<' + hold + '>';
	}
	else
		return nothing; //had nothing

}//How to check file if it is empty?  How to compare to vectors?
void findVector(string C, vector<string>&openVector,ofstream&outfile) {
	string result;
	result = find(openVector.begin(), openVector.end(), C);
	openVector.erase(result);  //ERROR HERE got an error trying to erase the matching tag
	
}
int main() {
	ifstream infile;
	ofstream outfile;
	string P = "",O = "",C = "";
	int i = 0;
	string arr[10] = {};//jut an 
	infile.open("input1.txt");
	if (infile.fail()) {
		cout << "Error input file will not open ";
	}
	outfile.open("out.txt");
	if (outfile.fail()) {
		cout << "Error output file will not open ";
	}
	infile >> P;
	
	vector<string> openVector, closeVector;

	while (!infile.eof()) {
		P = scan(infile);
        if (!infile.eof() && !P.empty())
		{
			arrayStow(P, i, arr,outfile);
			i++;
		}
		
		}
	infile.close();
	outfile.close();
	infile.open("input1.txt");
	outfile.open("out.txt");
	while (!infile.eof()) {
		O = openTagScan(infile);
		if (!infile.eof() && !O.empty())
		{
			openTagStow(O, openVector,outfile);
		}
		
	}
	infile.close();
	outfile.close();
	infile.open("input1.txt");
	outfile.open("out.txt");
	while (!infile.eof()) {
		C = closedTagScan(infile);
		if (!infile.eof() && !C.empty())
		{
			closeTagStow(C, closeVector,outfile);
			findVector(C, openVector,outfile);
		}
		
	}
	infile.close();
	outfile.close();
	system("pause");
	return 0;
}

[JLBorges]

Consider using std::stack<> for this. Something like this:

#include <iostream>
#include <string>
#include <stack>
#include <sstream>
#include <iomanip>

bool parse_stream( std::istream& stm )
{
    std::stack<std::string> tag_stack ; // http://en.cppreference.com/w/cpp/container/stack

    std::string token ;
    while( std::getline( stm >> std::ws, token, '<' ) && std::getline( stm, token, '>' ) )
    {
        if( !token.empty() )
        {
            if( token.front() != '/' ) tag_stack.push(token) ; // begin tag
            else // end tag
            {
                if( tag_stack.top() == token.substr(1) ) tag_stack.pop() ;
                else
                {
                    std::cerr << "*** mismatched tag \"<" << token << ">\"\n" ;
                    return false ;
                }
            }
        }
    }

    return tag_stack.empty() ;
}

void test( const std::string& text )
{
    std::cout << std::quoted(text) << '\n' ;
    std::istringstream file(text) ;
    if( parse_stream(file) ) std::cout << "all tags were matched\n\n";
    else std::cerr << "*** parse error\n\n" ;
}

int main()
{
    for( std::string str : {
                                "<html><head> <h>something</h> <body>something more</body> </head></html>",
                                "<html><head> <h>something</h> <body>something more</body> </hehe></html>",
                                "<html><head> <h>something</h> <body>something <b>more</body> </head></html>",
                                "<html><head> <h>something</h> <body>something <b>more</b></body> </head></html>",
                            }
       ) test(str) ;
}

"<html><head> <h>something</h> <body>something more</body> </head></html>"
all tags were matched

"<html><head> <h>something</h> <body>something more</body> </hehe></html>"
*** mismatched tag "</hehe>"
*** parse error

"<html><head> <h>something</h> <body>something <b>more</body> </head></html>"
*** mismatched tag "</body>"
*** parse error

"<html><head> <h>something</h> <body>something <b>more</b></body> </head></html>"
all tags were matched

http://coliru.stacked-crooked.com/a/fd75c5aeb5e27ddb

[TarikNeaj]

http://www.cplusplus.com/reference/vector/vector/erase/

A quick google search and I found your answer. Do some research first, saves yourself times.

Edit: You can read this one too - http://www.cplusplus.com/forum/beginner/99524/

[nameishi]

wow how did you come up with that, i enjoy programming but your code is only 49lines...and mine doesnt work so i guess i can not do it this way.
I am a little lost at the std:: no idea what that translates to

[JLBorges]

> I am a little lost at the std:: no idea what that translates to

See: http://www.cplusplus.com/forum/beginner/142171/#msg750694