terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
Aborted (core dumped)

#include <iostream>
 #include <fstream>
 #include <exception>
 
 using namespace std;
 
 int main(int argc, char* argv[]){
 
  ifstream inFile(argv[1]); //passing arguments to the main function
  int numEntries;
 
  if(!inFile){
  cout << "file not found" << endl;
  return 1;
  }
 
  string entry;
  while (!inFile.eof()){ //counting the number of entries
  getline(inFile,entry);
  ++numEntries;
  }
 
  const int length = numEntries; //making an array of appropriate length
  int*arr = new int[length];
 
  inFile.clear(); //going back to the beginning of the file
  inFile.seekg(0, ios::beg);
 
  int i = 0;
  const int size = numEntries; //making an array to store the entries in the file
  int matrix[size];
  int pos = 0;
 
  int variable = 0;
  while(pos < size){
  inFile >> variable;
  matrix[pos] = variable;
  ++pos;
  }
  cout<< numEntries << "entries have been read"<< endl; 
  inFile.close();
  for(int i = 0; i < pos; ++i)
  cout << matrix[i] << endl; //printing out the entries
  return 0;
 }