Saving integers in vector from string

Question

I have this string which contains numbers divided from one another with a /, like this 24/2/13. I want to save them individually in a vector of int,but it gives me this mistake expected unqualified-id before '.' token|. I know it might be a stupid mistake but that's just the qay for now :). Here is the code:

int t;
string s;
for(int i=0;i<final_states.size();i++)
{
    if(final_states.at(i)!='/')
        s.push_back(final_states.at(i));
    else
    {
        t=atoi(s.c_str());
        temp_final_states.push_back(t);
        s.clear();
    }
}

@user36 Well, congratulations ... I guess? How do you expect anyone to help you if they can't reproduce your problem. Post an [SSCCE](http://sscce.org). — Praetorian, May 22 '14 at 20:01
See http://meta.stackexchange.com/questions/40164/should-we-close-fix-my-program-questions — sashoalm, May 23 '14 at 07:17

score 0 · Answer 1 · answered May 22 '14 at 19:59

0

I assume this is a compile error. It looks like you are iterating over final_states. But then you try to call push_back() on temp_final_states. I assume you intend this to be the same collection.

answered May 22 '14 at 19:59

geipel

395
1
3
9

2

No he didn't. `final_states` is a `string`, and `temp_final_states` is a `vector` – Praetorian May 22 '14 at 20:00

score 0 · Answer 2 · answered May 22 '14 at 20:01

Refer following sample code http://ideone.com/id7E22

char str[] ="22/33/44";
  char * pch;
  cout<<"Splitting string into tokens:\n"<<str;
  pch = strtok (str,"/");
vector<int> vec;
  while (pch != NULL)
  {
    int val = atoi(pch);
    cout<<"   "<<val;
    vec.push_back(val);
    pch = strtok (NULL, "/");
  }

score 0 · Accepted Answer · answered May 22 '14 at 20:54

Assuming your string always starts with a numeric value and the '/' character is not at the end of the string this should do it for you:

std::string final_states="24/2/13";
std::vector<int> temp_final_states;

temp_final_states.push_back(atoi(final_states.c_str()));
std::string::size_type index = final_states.find('/');

for (; index != std::string::npos; index = final_states.find('/', index) )
{
    ++index;
    const char* str = final_states.c_str() + index;
    temp_final_states.push_back(atoi(str));
}

Saving integers in vector from string

3 Answers3