linux c pdf

#include <hpdf.h>
#include <stdio.h>

void error_handler(HPDF_STATUS error_no, HPDF_STATUS detail_no, void *user_data) {
    printf("ERROR: error_no=%04X, detail_no=%d\n", (unsigned int)error_no, (int)detail_no);
}

int main() {
    HPDF_Doc pdf = HPDF_New(error_handler, NULL);
    if (!pdf) {
        printf("Unable to create PDF object.\n");
        return 1;
    }

    HPDF_Page page = HPDF_AddPage(pdf);
    HPDF_Page_BeginText(page);
    HPDF_Page_MoveTextPos(page, 100, 600);
    HPDF_Page_ShowText(page, "Hello, World!");
    HPDF_Page_EndText(page);

    HPDF_SaveToFile(pdf, "hello.pdf");
    HPDF_Free(pdf);

    return 0;
}

#include <poppler/cpp/poppler-document.h>
#include <poppler/cpp/poppler-page.h>
#include <iostream>

int main() {
    std::unique_ptr<poppler::document> doc = poppler::document::load_from_file("example.pdf");
    if (!doc) {
        std::cerr << "Failed to load PDF document." << std::endl;
        return 1;
    }

    for (int i = 0; i < doc->pages(); ++i) {
        std::unique_ptr<poppler::page> page = doc->create_page(i);
        if (page) {
            std::cout << "Page " << i + 1 << ": " << page->text().to_latin1().data() << std::endl;
        }
    }

    return 0;
}