Input File Output File include include include include inclu

Input File

Output File

#include <iostream>
#include <fstream>
#include <cstring>
#include <cctype>
#include <cstdlib>
using namespace std;

int main()
{
    const char filename[] = \"C:/temp/fb_scores.txt\";
    char buffer[16], winner[32], loser[32];
    int winnerScore, loserScore;

    ifstream fin(filename);
    if (!fin)
    {
        cerr << \"Unable to open file \" << filename << endl;
        exit(1);
    }

    while (!fin.eof())
    {
        // get winner
        fin >> winner;
        if (fin.eof()) break;

        // get next token. Could be score or 2nd part of winner name
        fin >> buffer;

        // If buffer has a comma, then it\'s a score
        if (strchr(buffer,\',\'))
        {
            winnerScore = atoi(strtok(buffer,\",\"));
        }
        else
        {
            strcat(winner,\" \");
            strcat(winner,buffer);
            fin >> buffer;
            winnerScore = atoi(strtok(buffer,\",\"));
        }

        // get loser
        fin >> loser;

        // get next token. Could be score or 2nd part of loser name
        fin >> buffer;

        // If first digit is numeric, then it\'s a score
        if (isdigit(buffer[0]))
        {
            loserScore = atoi(buffer);
        }
        else
        {
            strcat(loser,\" \");
            strcat(loser,buffer);
            fin >> buffer;
            loserScore = atoi(buffer);
        }
        cout << winner << \" over \" << loser << \' \' << winnerScore << \" to \" << loserScore << endl;
    }
}

Repeat the parsing example for the football scores above, but use only c++ string class and string functions for the parsing.

Solution

#include <iostream>
#include <string>
using namespace std;

int main()
{
    const char filename[] = \"C:/temp/fb_scores.txt\";
    char buffer[16], winner[32], loser[32];
    int winnerScore, loserScore;

    ifstream fin(filename);
    if (!fin)
    {
        cerr << \"Unable to open file \" << filename << endl;
        exit(1);
    }

    while (!fin.eof())
    {
  fin >> winner;
        if (fin.eof()) break;
        fin >> buffer;
        if (strchr(buffer,\',\'))
        {
            winnerScore = atoi(strtok(buffer,\",\"));
        }
        else
        {
            strcat(winner,\" \");
            strcat(winner,buffer);
            fin >> buffer;
            winnerScore = atoi(strtok(buffer,\",\"));
        }
        fin >> loser;
        fin >> buffer;
        if (isdigit(buffer[0]))
        {
            loserScore = atoi(buffer);
        }
        else
        {
            strcat(loser,\" \");
            strcat(loser,buffer);
            fin >> buffer;
            loserScore = atoi(buffer);
        }
        cout << winner << \" over \" << loser << \' \' << winnerScore << \" to \" << loserScore << endl;
    }

return 0;
}