reading and parsing a text file

[faeory]

Hi! can someone please help me with a code that reads and parse this text file:

(A,B)=1
(A,F)=10
(F,C)=15
(E,D)=4
(B,E)=7
(F,B)=2

thank you!

[dutch]

Perhaps something like this.

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

class Edge
{
    char from, to;
    int  value;
public:
    friend std::istream& operator>>(std::istream& is, Edge& edge);
    friend std::ostream& operator<<(std::ostream& os, const Edge& edge);
};

std::ostream& operator<<(std::ostream& os, const Edge& edge)
{
    return os << '(' << edge.from << ',' << edge.to << ")=" << edge.value;
}

std::istream& operator>>(std::istream& is, Edge& edge)
{
    char ch;
    if (is >> ch && ch == '(' && is >> edge.from &&
        is >> ch && ch == ',' && is >> edge.to &&
        is >> ch && ch == ')' && is >> ch && ch == '=')
        return is >> edge.value;
    is.clear(is.failbit);
    return is;
}

int main()
{
    //std::ifstream in("your_file");

    // for testing:
    std::istringstream in(
        "(A,B)=1\n"
        "(A,F)=10\n"
        "(F,C)=15\n"
        "(E,D)=4\n"
        "(B,E)=7\n"
        "(F,B)=2\n");

    std::vector<Edge> edges;

    for (std::string line; std::getline(in, line); )
    {
        std::istringstream iss(line);
        Edge edge;
        if (!(iss >> edge))
            break;
        edges.push_back(edge);
    }

    for (const auto& e: edges)
        std::cout << e << '\n';
}