Check file exist cpp

#include <sys/stat.h>
#include <unistd.h>
#include <string>
#include <fstream>

inline bool exists_test0 (const std::string& name) {
    ifstream f(name.c_str());
    return f.good();
}

inline bool exists_test1 (const std::string& name) {
    if (FILE *file = fopen(name.c_str(), "r")) {
        fclose(file);
        return true;
    } else {
        return false;
    }   
}

inline bool exists_test2 (const std::string& name) {
    return ( access( name.c_str(), F_OK ) != -1 );
}

inline bool exists_test3 (const std::string& name) {
  struct stat buffer;   
  return (stat (name.c_str(), &buffer) == 0); 
}

Source: stackoverflow.com

Check file exist cpp

Method exists_test0 (ifstream): **0.485s**
Method exists_test1 (FILE fopen): **0.302s**
Method exists_test2 (posix access()): **0.202s**
Method exists_test3 (posix stat()): **0.134s**

Source: stackoverflow.com

Similar codes

0 vote330 views2 answers
Grocery shopping list c++ chegg
C++
0 vote349 views1 answer
What is c++ file extension
C++
0 vote344 views1 answer
Use regex replace in c++
C++
0 vote471 views1 answer
Changing values of mat in opencv c++
C++
6 votes369 views2 answers
Create dynamic array c++
C++
1 vote361 views2 answers
Torch cuda is available
C++
3 votes322 views1 answer
Set precision with fixed c++
C++
0 vote333 views1 answer
Estimateaffine3d example c++
C++
0 vote388 views1 answer
Youtube backlink generator tool
C++
0 vote311 views1 answer
C for loop decrement
C++