CODEWITHSUNDEEP
c++vectordelimitergetline
yung_Pabs
yung_Pabs

Reputation: 101

Splitting strings separately by line and by blank space (using getline)

I am trying to read in lines of standard input and put each string on a line (separated by a space) into an index of a vector of vector strings, and then put each line in a separate index, but I'm confused how i would do this with getline.

Example, say my stdin is:

Hello
I want a
sand wich

The vector of string vectors would look like:

0: {"Hello"}
1: {"I", "want", "a"}
2: {"sand", "wich"}

I'm trying to code something like this:

vector <vector <string> > name;
string line, s;
int count= -1;
while(getline(cin, line, '\n'))
{
    count++;
    while (getline(line, s, ' '))
    {
        name[count].push_back(s);
    }
}

Would this do what I am trying to do?

Oh so with a string stream, like this?

vector <vector <string> > name;
string line, string;
stringstream ss;
int count= -1;
while(getline(cin, line, '\n'))
{
    count++;
    ss.str(line);
    while (ss >> string)
    {
        name[count].push_back(string);
    }
    ss.clear();
}

Upvotes: 0

Views: 5450

Answers (1)

avinash pandey
avinash pandey

Reputation: 1381

You can try the following code .

vector <vector <string> > name;
vector<string> tmp;
string line, str;//It should not be string
stringstream ss;
int count= -1;//no need for count variable as pushing to a vector starts from 0
while(getline(cin, line, '\n'))
{
    count++;
    ss.str(line);
    while(ss >> str)
    {
        tmp.push_back(str);//extracting tokens of string in tmp vector
    }
    name.push_back(tmp);//pushing vector of string to main vector
    tmp.clear();
    ss.clear();
}

Upvotes: 1

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