Failing to open .txt file on C++ Windows

Question

I'm failing to open a .txt file using std::ifstream file and file.open() . I want to use an indirect PATH (starting in the folder the .exe file is in - \\program_folder ), but using a complete PATH ( C:\\Users\\Rafael\\Desktop\\C++\\program_folder\\inputs\\test.txt ) also didn't work.

#include <iostram>
#include <vector>
#include <string>
#include <fstream>

int main(){
   char c;
   std::vector<std::string> inputs;
   inputs.push_back("C:\\inputs\\test.txt");
   int a; int b;
   std::ifstream file;
   file.open(inputs[0]);
   if (file.is_open()){
      c = file.get();
      file.close();
   }
   else {std::cout << "\nfail to open file";}
}

As output, I'm getting the fail massage.

Answer 1

"C::\\\\inputs\\\\test.txt" was not a relative path i had to use "inputs\\\\test.txt"

thanks to john in the comments.