"string could not be resolved"

[ramus313]

here is the code, is get an error "Type string (or std::string) could not be resolved"

btw i know this doestn do anything im stil declaring this stuff and i need to be ab le to use strings before i start implementation


#include <iostream>
#include <fstream>
#include <sstream>


class Musicfile{ public:

Musicfile();
~Musicfile(); //default destructor w/ no argument

void get_info();
void print_info();
};

[Peter87]

Try #include <string> if you are going to use string.

[ramus313]

i still get the same error

[Peter87]

your code don't use string so I don't understand why you get that error

[ramus313]

no i get the error when i try to declare a string, i havent done so in the code above but when i do i get the error

[Peter87]

does this compile?

#include <iostream>
#include <fstream>
#include <sstream>
#include <string>

class Musicfile{ public:

Musicfile();
~Musicfile(); //default destructor w/ no argument

void get_info();
void print_info();

std::string str;
}; 

[ramus313]

nope, ame error, btw i can do ints chars, and other primitive data types and it works fine, but i cant use a char array for what i want to do

[Unca Alby]

This thread seems to have died away. Let me attempt to revive it.

Here is the code

File: "name.hpp"

#ifndef NAME_HPP_
#define NAME_HPP_

#include <string>

class Name {
private:
	string name;
public:
	Name();
};

#endif /* NAME_HPP_ */ 

File: "name.cpp"

#include "name.hpp"

Name::Name() {
}

And the errors:

Description	Resource	Path	Location	Type
'string' does not name a type	name.hpp	/hw	line 15	C/C++ Problem
Type 'string' could not be resolved	name.hpp	/hw	line 15	Semantic Error

WTF IS WRONG WITH THIS CODE? (sorry to shout, this is frustrating)

As it so happens, if I copy it to the file where the "main()" function is located, then it's perfectly happy.

[DSLq5Di1]

Missing the namespace declaration,

#include <string>

class Name {
private:
	std::string name;

[Unca Alby]

AHHH! It's so simple when you see it!

Thank you @sloppy9, that fixes it (or including a "using namespace std" line)

[bluecoder]

you can also try the namespace option with the above code .

#include <iostream>
#include <fstream>
#include <sstream>
#include <string>

using namespace std; 
class Musicfile{ 
public:

        Musicfile();
        ~Musicfile(); //default destructor w/ no argument

          void get_info();
          void print_info();

          std::string str;
}; 

[Unca Alby]

Thank you @bluecoder! Any particular reason to include both the "using namespace std" directive and the "std::" scope identifier?

I was getting to ready to come in screaming and yelling, because I tried it again on a different machine, but this time I was getting "'string' does not name a type".

I was all up and typing in my complaint, when I noticed the examples above: "#include <string>".

Oops! A little something I seemed to have forgotten!

So much to remember!

[LB]

There is no reason to use both unless you have a bad habit of alternating whether you use std:: or not during the same code session.

[Galik]

Although using namespace std; can be useful for trivial code examples, it should generally be avoided in full programs:
http://www.parashift.com/c++-faq-lite/coding-standards.html#faq-27.5

It can be the source of some difficult to find errors.