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 vote116 views1 answer
How to store pair in min heap in c++
C++
0 vote134 views1 answer
What is imposter syndrome
C++
0 vote139 views1 answer
To toggle (flip the status of) the k-th item of the set
C++
0 vote159 views1 answer
Qregexpvalidator qlineedit email address
C++
3 votes114 views4 answers
Typedef
C++
-1 vote128 views1 answer
How to append two vectors in c++
C++
2 votes130 views1 answer
How to use python sleep function on c++
C++
2 votes124 views1 answer
Capitalize first letter c++
C++
0 vote137 views1 answer
C++ print to standard error
C++
2 votes164 views1 answer
++x vs x++
C++