How do I read X file into RAM as a number in C++ in a linux environment? -


i'm working on compression program needs read file ram single number , perform basic math operations , bit shifting. i've looked @ gmp gnu, has such poor integration c/c++ have no idea begin read , put values mpz_t variable.

#include <fstream> #include <gmp.h> #include <gmpxx.h> #include <iostream>  using namespace std;  mpz_class filetonumber (const string& filename) {     mpz_class number;     ifstream file(filename.c_str());     while( file.good() ){         unsigned char c;         file >> c;         number <<= 8;         number += c;     }     file.close();     return number; }   int main (int argc, char* argv[]) {     if( argc - 1 < 1 ){         cout << "usage: " << argv[0] << " file.txt" << endl;         return 0;     }     cout << hex << filetonumber(argv[1]) << endl; }

edit: fixed, misunderstood original question, reads files number instead of ascii number.

edit: moved entire file mpz_class conversion nice function.


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