How to Append Text to a File in C ?

Appending Text to Text Files in C

In C , appending text to a text file requires managing open modes. You can create a new text file if it does not exist and append text to it if it does exist by utilizing the append open mode.

Solution:

The following C code demonstrates how to append text to a text file:

#include <fstream>

int main() {
    std::ofstream outfile;

    // Open file in append mode
    outfile.open("test.txt", std::ios_base::app);

    // Append data to file
    outfile << "Data";

    // Close the file
    outfile.close();

    return 0;
}

By specifying the std::ios_base::app mode in outfile.open, the file will be opened for appending instead of overwriting. The outfile << "Data" statement then appends the "Data" string to the file.

Remember to close the file using outfile.close() when finished to ensure data is written to the disk.

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