#includeThis code creates a QFileInfo object for a file and uses the exists method to determine if the file exists. If the file does exist, the program will output "File exists!" to the console. Otherwise, it will output "File does not exist!" This code example requires the Qt Core library.#include int main() { QFileInfo fileInfo("/path/to/file.txt"); if (fileInfo.exists()) { qDebug() << "File exists!"; } else { qDebug() << "File does not exist!"; } return 0; }