How can i skip a character while inputting from a file in ifstream?

[newnew1234]

how do i skip a char in filestream?
i tried the ignore function but that doesnt work in filestream, i also tried using an array[i] and said if(arr[i]=="-")
then i++ while outputting but that doesnt work either

[rproffitt]

Let's see the code you tried.

[newnew1234]

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

void read (ifstream & in, ofstream & out)
{

    int a[20];
    string temp;
    int i=0;
    int j=0;

    in.open("phnum.txt");

    while(!in.eof() )
    {
              in>>a[i];
              i++;
    }

    in.close ();

    j=i;

    for(int i=0;i<j;i++)
    {
        cout<<a[i];
    }
    cout<<endl;

    int b[20];
    for ( i=0;i<j;i++)
    {
        if( a[i] != '-')
        {
            b[i]=a[i];
        }
        else
        {
            cin.ignore(1);
        }
    }

    for(int i=0;i<j;i++)
    {
        cout<<b[i];
    }

    out.open("outFile.txt");

    for(int i=0;i<j;i++)
    {
        if(a[i] != '-')
        {
            out<<a[i];
        }
        else
        {
            i++;
        }
    }

}
int main ()
{
    ifstream in;
    ofstream out;

    read (in, out);


    system("pause");
    return 0;

}

[newnew1234]

I'v tried it with char array and string as well using ignore function but nothing seems to work and it doesnt output anything either

[rproffitt]

To me this code is working too hard. Here's my take on it.

/******************************************************************************

                              Online C++ Compiler.
                https://www.onlinegdb.com/online_c++_compiler
               Code, Compile, Run and Debug C++ program online.
Write your code in this editor and press "Run" button to compile and execute it.

*******************************************************************************/

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

void read ()
{
    ifstream in;
    ofstream out;
    int a;

    in.open("phnum.txt");
    out.open("outFile.txt");

    while(!in.eof() )
    {
        in>>a;
            if(a != '-')
            {
                out<<a;
            }
    }
    in.close ();
    out.close ();
}

int main ()
{
    read ();
    system("pause");
    return 0;
}

[newnew1234]

For some reason, this doesn't remove the dash, is something wrong with my visual studio then?

[rproffitt]

I see a possible gaffe on my part. Line 16 calls out an int and we are comparing a char on line 26. Possible fix? Change int to char on line 16.