TextFile Issues

#include <iostream>
#include <fstream>
#include <vector>
#include <string>

int main() {
    std::vector<int> Array = { 1, 2, 4, 8, 1, 2, 3, 4, 5 };

    // Open the file and read values
    std::ifstream inputFile("1_file.txt");
    if (!inputFile) {
        std::cerr << "Error opening file!" << std::endl;
        return 1;
    }

    int value;
    while (inputFile >> value) {
        Array.push_back(value);
    }

    inputFile.close();
    std::cout << "Updated Array: ";
    for (int num : Array) {
        std::cout << num << " ";
    }
    std::cout << std::endl;

    return 0;
}