c ifstream to stringstream using getline()-CodePudding

I am making a bowling program for school that stored scores in a text file with the format:

paul 10 9 1 8 1, ...etc
jerry 8 1 8 1 10 ...etc
...etc

I want to read the file into a stringstream using getline() so I can use each endl as a marker for a new player's score (because the ammount of numbers on a line can be variable, if you get a spare or strike on round 10). I can then read the stringstream using >> to get each score and push it into a vector individually.

However, when trying to use getline(fstream, stringstream), I get an error

no instance of overloaded function "getline" matches the argument list -- argument types are: (std::fstream, std::stringstream)

How can I make this work?

My code looks like this:

#include <iostream>
#include <vector>
#include <fstream>
#include <exception>
#include <string>
#include <sstream>

using namespace std;

//other parts of the program which probably don't matter for this error

vector <int> gameScore;
vector<string> playerName;
int i = 0;
int j = 0;
string name;
int score;
stringstream line;

while (in.good()){ //in is my fstream
    playerName.push_back(name);
    cout << playerName[i] << " ";
    i  ;
    getline(in, line);

    while (line >> score){
        gameScore.push_back(score);
        cout << gameScore[j] << " ";
        j  ;
    }
}

CodePudding user response：

You can't use std::getline() to read from a std::ifstream directly into a std::stringstream. You can only read into a std::string, which you can then assign to the std::stringstream, eg:

vector<int> gameScore;
vector<string> playerName;
string name, line;
int score;

while (getline(in, line)){
    istringstream iss(line);
    iss >> name;
    playerName.push_back(name);
    cout << name << " ";

    while (iss >> score){
        gameScore.push_back(score);
        cout << score << " ";
    }
}