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

51 votes302 views3 answers
Phph date
C++
0 vote263 views1 answer
C++ power of two
C++
0 vote294 views1 answer
Convert unsigned long to string c++
C++
2 votes245 views1 answer
How to complie with c++ 17
C++
1 vote245 views1 answer
Perulangan c++
C++
0 vote250 views1 answer
New float array c++
C++
0 vote274 views1 answer
Do c++ ints neeed to be initlaized
C++
0 vote243 views1 answer
Random key generator c++ all unique characters
C++
0 vote242 views1 answer
How to point to next array using pointer c++
C++
1 vote246 views1 answer
Std::string to qstring
C++