C++ Convert String with commas separated values to vector

Question

I think the title it's pretty explanatory, anyways, here's what I'm trying to do: given an input of a string of integers between 0 and 9, every number separated with a comma, convert it into a std::vector. I already know the lenght of the string so the vector is already resized properly

I know it has been answered before, (How can I read and parse CSV files in C++?) but I'm looking for a solution without external libraries (it's for an assignement).

1) this version works but I think it's very rudimental and I'm trying to improve it

string line;
vector<int> numers;
int i=0;
...
for (string::iterator it=line.begin(); it<line.end(); it=it+2){ //I need to skip commas
    numbers[i]=*it-48;

2) this is what I think would perform better, but can't get it to work!

line.erase(std::remove(line.begin(), line.end(), ','), line.end());
transform(line.begin(),line.end(),numbers.begin(),[](const string &str){return stoi(str);});

this solution doesn't compile

Any better idea?

What does "can't get it to work" supposed to mean? Does it fail compile, or to you get a runtime error? — StoryTeller - Unslander Monica, Feb 11 '16 at 12:00
@StoryTeller i get a compiler error about *__result=__unary_op(*__first) — mariob6, Feb 11 '16 at 12:05
`std::string::begin()` returns an iterator that iterates over every character of the string. You need to split at the commas. — Simon Kraemer, Feb 11 '16 at 12:05
@SimonKraemer i tried with 'line.erase(std::remove(line.begin(), line.end(), ','), line.end());' but stil get the same compiler error — mariob6, Feb 11 '16 at 12:12

C++ Convert String with commas separated values to vector

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