How do you open and read files in C++ (NOT WRITING OR CREATING NEW ONES)

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1

I need help. I am trying to experiment with reading from a file (to create an esolang or such). I have successfully created and closed files, but not read from them or an already existing file.

Repl: https://replit.com/@EarthRulerr/Testing-stugff-smh?v=1

I have tried multiple ways to no avail.

2

lol I just use freopen("file.txt", "r", stdin); and proceed with cin

3

Explain and help pls ive never done this before :sob:

4

same lol I only use freopen XD

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5

Here’s some info that should help. Check out the read a file example. :smile:

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6

Hello,
To open and read files in C++, you can use the “fstream” library which provides classes for working with files. Here’s an example code snippet that demonstrates how to open and read a file in C++:

// You can modify the directory paths to your own needs
#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main() {
   // Open a file for reading
   ifstream inputFile("example.txt");

   // Check if the file was opened successfully
   if (!inputFile) {
      cerr << "Error opening file" << endl;
      return 1;
   }

   // Read the file line by line
   string line;
   while (getline(inputFile, line)) {
      cout << line << endl;
   }

   // Close the file
   inputFile.close();

   return 0;
}
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