Code Comments(Return Types)? & Dev-C++ New Version Error?

Code:

1 C:\path\index.cpp [Warning] `nul.gcda' is not a gcov data file

Anyidea what that means? I get it whenever i use the syntax check on Dev C++ 4.9.9.2. But not when i compile..


Also, I'v got a question about the following code.

Code:

class cItemHandle
{
    public:
        cItemHandle();
        ~cItemHandle();
        float returnValue(string itemName);
        bool  setValue(string itemName);
    private:
        string fileData;
};
cItemHandle::cItemHandle()
{
    ifstream iFile("stats.dat", ios::ate);
    int size = iFile.tellg();
    iFile.seekg(0, ios::beg);
    char* ch = new char[size];
    iFile.read(ch, size);
    fileData = ch;
    iFile.close();
}
cItemHandle::~cItemHandle(){}
float cItemHandle::returnValue(string itemName)
{
    int stringStart =       fileData.find(itemName,0);
    int stringLineEnd =     fileData.find("\n",stringStart);
    int valueStart =        stringStart + itemName.length() + 1;
    int valueLen =          stringLineEnd - valueStart;
    
    cout<<"\nName: "<<itemName;
    cout<<"\nStarts At: "<<valueStart;
    cout<<"\nEnds At  : "<<stringLineEnd;
    cout<<"\nReturn Value: "<<fileData.substr(valueStart,valueLen);
    return 0.1;
}
bool cItemHandle::setValue(string itemName)
{
    return false;
}

If you notice i am taking a files data, storing it in a string (Thanks Lithorien ) and doing various things with it. Well i'v got a question about the return values..
I could easily deal with the return values all being float's, which is what i first planned on. But i decided i might try to expand on that, though i dont know how to handle such things.
Seeing as a method must first run through the string to find the value (which is in this format)

Code:

item1=value
item2=value
item3=value

how can i deal with the return type? like i said originally i planned on them all being float values but then decided to see if i could change it to any type. I mean if i could just do a simpe if to check what types they are, thats one thing, but then i still cant return any type.

Down the road when i am pulling data from the string's item values for calculations and whatnot, i should know what everythings data type is (ie height=float, name=string), so that shouldent cause any problems.. i am more concerned about programming for multiple return types.

So how could i handle multiple return types? Thanks

A function can return one and only one thing at a time. But often, one wants to return more than one thing from a single function. To do this, use reference parameters:

Code:

void foo(int &x, double &y);

int main()
{
   int x;
   double y;
   cin >> x >> y;
   foo(x,y);
   cout << "x: " << x << endl
           << "y: " << y << endl;
   return 0;
}

void foo(int &x, double &y)
{
   ++x;
   y *= 1.5;
}

Try that out. As you can see, foo() is void and thus returns nothing, but it is able to change the values of x and y because they were passed by reference, so in a way, it's as if the function is returning an int and a double.

how can i see if two data types are the same?
That and i assume i'll have issues with figuring out what data type the substring is ment to be.
ie

Code:

string.substr(0,4) // this returns 0.05 as a string

How could i tell which data type that actually is? Or hmm, it "should" be. in this example the string returns a string that should be a "float"

The <cctype> library has the functions isdigit(), isalpha(), isspace(), etc. that can determine whether a single character is a digit or letter or whitespace, etc.

There's also the atoi() and atof() functions which take a char* and return an integer and a double, respectively; however, in order to use these, you ought to know what you're working with first.

know what i'm working with or what i'm doing lol

What i'm working with is a string that i wish ti determine what it is, then convert it to what it should be. Ie if its a ASCII characters "1", "0", and "5", i wish to turn it to the Integer 105. Ect..

(had to edit that, wrote the ascii part like the number 105 was a single ascii character number.

i was googling the commands atoi() and whatnot,

http://mathbits.com/MathBits/CompSci...nc/Convert.htm
is a little example,
One thing, the parameter it takes is a character array correct?

Also, is this the ASCII value or what? In otherwords i want
myString = "0.014";
float = myString;
cout<<myInt; // returns 0.014

I am facing the same problem....

"profiling:%s:Not a gcov data file"

Anybody has any pointers. Please help.

1. Please read the forum rules and pay attention to things like "don't bump dead threads". This one was 5 years old.

2. Did you also search your error messages?
Of course you did, that's why you're here. It's #1 on the list.
But did you keep reading through the list?
At #5 there is FW: nul.gcda warning - msg#00009 - gnu.dev-cpp.user

3. Dev-c++ is old, buggy and unmaintained.
Try Code::Blocks