Question

I am trying to read a file line by line using the code below :

void main()
{
    cout << "b";
    getGrades("C:\Users\TOUCHMATE\Documents\VS projects\GradeSystem\input.txt");
}

void getGrades(string file){

    string buf;
    string line;
    ifstream in(file);

    if (in.fail())
    {
        cout << "Input file error !!!\n";
        return;
    }

    while(getline(in, line))
    {
        cout << "read : " << buf << "\n";
    }

}

For some reason it keeps returning “input file error!!!”. I have tried to full path and relative path (by just using the name of the file as its located in the same folder as the project). what am I doing wrong?

Answer 1

You did not escape the string. Try to change with:

getGrades("C:\\Users\\TOUCHMATE\\Documents\\VS projects\\GradeSystem\\input.txt");

otherwise all the \something are misinterpreted.