how to check if a file exists or not c++ code example
Example 1: 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);
}
Example 2: c++ check if file exits
#include <fstream>
#include<iostream>
using namespace std;
int main() {
ifstream ifile;
ifile.open("b.txt");
if(ifile) {
cout<<"file exists";
} else {
cout<<"file doesn't exist";
}
}