c 2b 2b check if file exits

Solutions on MaxInterview for c 2b 2b check if file exits by the best coders in the world

Search
showing results for - "c 2b 2b check if file exits"
Jameson
27 Jul 2018
1#include <sys/stat.h>
2#include <unistd.h>
3#include <string>
4#include <fstream>
5
6inline bool exists_test0 (const std::string& name) {
7    ifstream f(name.c_str());
8    return f.good();
9}
10
11inline bool exists_test1 (const std::string& name) {
12    if (FILE *file = fopen(name.c_str(), "r")) {
13        fclose(file);
14        return true;
15    } else {
16        return false;
17    }   
18}
19
20inline bool exists_test2 (const std::string& name) {
21    return ( access( name.c_str(), F_OK ) != -1 );
22}
23
24inline bool exists_test3 (const std::string& name) {
25  struct stat buffer;   
26  return (stat (name.c_str(), &buffer) == 0); 
27}
28
source
Valerio
20 Aug 2019
1#include <fstream>
2#include<iostream>
3using namespace std;
4int main() {
5   /* try to open file to read */
6   ifstream ifile;
7   ifile.open("b.txt");
8   if(ifile) {
9      cout<<"file exists";
10   } else {
11      cout<<"file doesn't exist";
12   }
13}
source
Salvatore
15 Nov 2020
1Method exists_test0 (ifstream): **0.485s**
2Method exists_test1 (FILE fopen): **0.302s**
3Method exists_test2 (posix access()): **0.202s**
4Method exists_test3 (posix stat()): **0.134s**
5
source
similar questions
c 2b 2b if in equivalenthow to do if command in c 2b 2bcheck if directory exists cppc 2b 2b how to check if ifle is openediff cppfind if c 2b 2b examplehow to check size of file in c 2b 2bc 2b 2b fstream create if not existsif c 2b 2bif programming c 2b 2bhow to check if file is opened c 2b 2b
queries leading to this page
find file exists c 2b 2bc 2b 2b check if file exists and is directorychect if file exists in c 2b 2bhow to check for the existence of a file in c 2b 2bc 2b 2b check if file existscpp check if file exists fstreamcheck if file exists cppc 2b 2b check file and folder existc 2b 2b check if string exists in filec 2b 2b get if file existsif file exist c 2b 2bcheck if filename exists c 2b 2bcheck if a file exists in c 2b 2btest if a file exists c 2b 2bc 2b 2b check file existcheck file exists in cpp file exist c 2b 2bcheck if a file exists cppcheck exist file c 2b 2bcheck if the file name is correct in c 2b 2bcheck if file is open in c 2b 2bc 2b 2b file existc 2b 2b test if file existsc 2b 2b check if text file existshow to see if a file exists c 2b 2bc 2b 2b check if file name exiistdetect if file exists c 2bcheck if file in directory c 2b 2bhow to know if a file exists or not c 2b 2bopen a file if it exists c 2b 2bc 2b 2b check if a file exists beginnersc 2b 2b check if a file is openceck if a gile exists c 2b 2bcheck if file exists in c 2b 2b in ifhow to check if file exist in c 2b 2bhow to check if a file exists or not c 2b 2bc 2b 2b check if files existsc 2b 2b check if file exists without openingdirent check if file exists c 2b 2bdetect if file exists c 2b 2bfunstion to check if file exits c 2b 2bc 2b 2b see if a file existsc 2b 2b check end if filecheck if string exists in file c 2b 2bsee if file exists c 2b 2bhow to check whether a file exists in c 2b 2bbash if found file is cpphow to check if a file exsists before opening it in c 2b 2bcheck if name file is c cppc 2b 2b fstream check if file existsc 2b 2b check if can access filec 2b 2b does a file existc 2b 2b check whether file existshow to check if a file exsit in cppcpp check file existsc 2b 2b linux check if file existscheck if file exists c 2b 3dhow to implement check on the file in c 2b 2bhow to check if a file is exists in c 2b 2bc 2b 2b check if there is file name existc 2b 2b know if file existsc 2b 2b file existscheck if a file is open c 2b 2bcheck for file exist in c 2b 2bcpp filesystem check if file existshow to check if there is an information in a file in cppcpp check if a file existsknow if file c 2b 2bcp file if existsc 2b 2b see if file existshowt to check if file exists c 2b 2bcheck if file exists in current directory c 2b 2bcheck file exists c 2b 2bcheck is file exists c 2b 2bfilesystem check if file exists c 2b 2bcheck if file exists in c 2b 2bcheck file exists in c 2b 2bcheck if file opened c 2b 2bhow to check if file already exists in c 2b 2bcheck if some file exits in c 2b 2bcpp check if file 5cverify if file exists c 2b 2bcpp 14 check if path is filec 2b 2b check if file exists in directoryexist file in c 2b 2bhow to check file exists in cppknow if a file exists cppcheck file exist c 2b 2bhow to check if a file exists c 2b 2bhow to tell if file is open in c 2b 2bc 2b 2b check if file exitshow to check if a text file exist c 2b 2bif file exists c 2b 2bc 2b 2b if file existscheck if file is folder ifstreamcpp check if file openedhow to check if a file exists in cppcheck if a file exists c 2b 2bc 2b 2b how to check if a file existshow to check if a file exists in c 2b 2b file handlingcpp check if file existsc 2b 2b check if file name existscpp check file existc 2b 2b exist filehow to check if a file opened in c 2b 2bcheck if it is file cppcheck if a file exists c 2b 2b windowshow to check if a file exists in c 2b 2bc 2b 2b check file existscheck if file exists c 2b 2b filesystemhow to check file exist or not in c 2b 2bsee if file exists in directory c 2b 2bfile exists c 2b 2bhow to check if file exists c 2b 2bhow to check if file exits cpp 28inside folder 29check if file exist or not c 2b 2bcheck for file exist c 2b 2btest if file exist c 2b 2bcpp check if file existhow to check if file exists in c 2b 2bhow to check if a file is open in c 2b 2bcheck if file is open c 2b 2bcheck if file exists c 2b 2bc 2b 2b check if a file existscheck if file exists c 2b 2b using fstreamc 2b 2b check if file openhow to check if file exists cppcheck if file exist in c 2b 2bc 2b 2b does file existc 2b 2b function to check if file existscheck if file exists in c 2b 2b using filesystemcheck if is file cppc 2b 2b check if file exits