在UNIX下删除C++中的文件

#include <cstdio>
int remove(const char *filename);

#include<iostream>
#include <cstdio>

int main() {
    const char *filename = "test.txt";
    int result = remove(filename);
    if (result == 0) {
        std::cout << "File "<< filename << " deleted successfully."<< std::endl;
    } else {
        std::cout << "Failed to delete file "<< filename << "."<< std::endl;
    }
    return 0;
}