tingi

#include <stdio.h>#include <unistd.h>#include <fcntl.h>#include <sys/types.h>#include <sys/stat.h>int print_val(const char * filename){  int err;  err = open(filename, O_RDONLY, 0);  printf("err = %d\n", err);  printf("filename = %s\n", filename);}int main(int argc, char ** argv){  print_val(argv[1]);}