[Solved] I’m having trouble creating a function to read in a file [closed]

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not sure what you want to do with the data once you read it, but this will put each line into a vector. Also note, for this to work your need to change argc…doing this in Xcode you go to product menu, then scheme, edit scheme, click the + and type in the path to your file

#include <iostream>
#include <iomanip>  // for setw() and ws
#include <string>
#include <fstream>
#include <cstdlib>
#include<vector>

using namespace std;
/* function prototype(s) */
void addContents(ifstream&);

int main(int argc, char* argv[])
{
    if (argc < 2) {
        cerr << "Usage: " << argv[0] << "/path/to/your/file" << endl;
        exit (1);
    }
    ifstream datafile {argv[1]}; /* first arg is filename */
    if (!datafile.is_open()) {
        cout << "Can't read input from " << argv[1] << endl;
        exit (1);
    }

    addContents(datafile);
    datafile.close();
    return 0;
}

void addContents(ifstream& ff){
    vector<string> fileContents;
    string currentLine;
    while(getline(ff, currentLine)){
        fileContents.push_back(currentLine);
    }
    for (int i = 0; i<fileContents.size(); i++){
        cout << fileContents.at(i) << endl;
    }
}

solved I’m having trouble creating a function to read in a file [closed]