How can I open and display an existing file on my computer with C/C++?

Question

I tried but it ends in the error handler loop, which means the file does not open, let alone display 😢

Answer 1

The program seems correct to me (and works on my machine). Make sure the filename is spelled correctly.
One thing to keep in mind is that file paths are relative to the executable, not the source files. If you compile your program outside of your source folder, the path might be incorrect. If in doubt, try using absolute paths instead.
Unfortunately, this is kind of hard to debug since we have no way of seeing your filesystem.

Answer 2

Maybe you could try this tutorial using fstream?
https://www.tutorialspoint.com/read-data-from-a-text-file-using-cplusplus

Answer 3

Forche Herod
check if the compiled exe is in the same directory as the text file. If not, move them to the same folder and run the exe again.
I agree with Shadow andTina that the compiler is probably compiling the code to another directory, so it is not finding the text file when it runs.

Answer 4

code works fine for me also even with an empty file. most likely a path or file name problem.
btw move read.close(); to the end of else block.

Answer 5

This is the code. f.txt is in the same folder as the source code.

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

int main()
{
ifstream read;
read.open("f.txt");
if(!read) {
cout<<"error";

} else {
string line;
while(getline(read, line)) {
cout << line ;
}
}
read.close();
}

Answer 6

You can open text files with any text editor. Right-click the file, choose open with notepad or something.

Answer 7

I want the compiler to read and display the file contains

Answer 8

what error do you get?
are you sure that it is "ifstream"?

Answer 9

ifstream is used for reading

Answer 10

isn't it "fstream" as the header indicates?

Answer 11

I am sure of that

Answer 12

fstream is the header which holds datatypes ifstream, ofstream and fstream

Answer 13

I receive "error" because the file isn't opening

Answer 14

I don't know much c++, sorry...

Answer 15

Ok thanks anyway 🙏

Answer 16

Thanks for the link

Answer 17

But I wanted to read without writing first

Answer 18

Thanks guys. I will try when I access my computer

Answer 19

Got that. Thanks🙏. I'll retry

Answer 20

Oh you don't know how it feels to be alone baby