Re: vector of (int,string). can't convert i->first to int

From:
Milan Krejci <rdw@no-spam.mail.cz>
Newsgroups:
comp.lang.c++
Date:
Wed, 15 Aug 2007 12:07:41 +0200
Message-ID:
<f9uj97$21hr$1@news.vol.cz>
hello thanks for the reply.
i have a vector of 15,"something" ... 19,"something"...20,"something
else".. 32,"something" and i'm trying to find out from what int to what
int there is "something" in the pair. in other words i need to get
first==15, latest==19, typ=="something" and
first= , latest==31, typ=="something else".
QString was a QT toolkit's implementation of a string class.

Jim Langston napsal(a):

"Milan Krejci" <rdw@no-spam.mail.cz> wrote in message
news:f9ufvu$1uum$1@news.vol.cz...

int first=15,latest=15; QString typ=NULL;
    std::map<int,std::string>::iterator i;
    for(i = SeznamPracovniDoby.begin(); i != SeznamPracovniDoby.end();
i++)
    { if (typ==NULL) typ=i->second.c_str();
    if (typ!=i->second.c_str()) { std::cout<<first<<"-"<<latest<<":"<<typ;
first=i->first; }
    else { latest=i->first; typ=i->second.c_str(); }
         std::cout << i->first << " " << i->second << std::endl;
    }


I don't know what you are trying to show. Formatting your code and
replacing QString with std::string and changing it so it compiles, it
compiles.

#include <iostream>
#include <map>
#include <string>

int main()
{
    std::map<int,std::string> SeznamPracovniDoby;

    int first=15,latest=15;
    std::string typ;
    std::map<int,std::string>::iterator i;
    for(i = SeznamPracovniDoby.begin(); i != SeznamPracovniDoby.end(); i++)
    {
        if ( typ == "" )
            typ = i->second.c_str();
        if (typ!=i->second.c_str())
        {
            std::cout<<first<<"-"<<latest<<":"<<typ;
            first=i->first;
        }
        else
        {
            latest=i->first;
            typ=i->second.c_str();
        }
        std::cout << i->first << " " << i->second << std::endl;
    }

}

I don't know what you're trying to do though, and I don't know what QString
actually is. Post some compilable code that demonstrates the problem.

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