What does infile mean in c++

In C, infile represents the input file stream object, used to read file data. Its usage includes: including the header file . Create an infile object. Open the file using open() and associate it with infile. Use common methods such as open(), close(), and getline() for file operations.

infile in c

infile represents the input file stream object in C, which allows the program to read the file data in.

Usage

To use infile, you need to include the header file first. Then, create an infile object using the following syntax:

<code class="cpp">ifstream infile;</code>

To open a file and associate it with the infile object, you can use the open() function:

<code class="cpp">infile.open("filename.txt");</code>

Method

The infile object provides the following common methods:

• open(): is used to open a file.
• close(): Used to close the file.
• is_open(): Check whether the file is open.
• eof(): Check whether the end of the file has been reached.
• get(): Read a character from the file.
• getline(): Read a line from the file.
• read(): Read the specified number of characters from the file.

Example

The following example demonstrates how to use the infile object to read a file:

<code class="cpp">#include <fstream>

int main() {
  ifstream infile;
  infile.open("data.txt");

  if (infile.is_open()) {
    string line;
    while (getline(infile, line)) {
      cout << line << endl;
    }
    infile.close();
  }

  return 0;
}</code>

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