Reading a large text file to memory in C++

Question

Is there a way to read a large text file (~60MB) into memory at once (like a compiler flag to increase program memory limit) ? Currently, ofstream's open function throws a segmentation fault while trying to read this file.

ifstream fis;
fis.open("my_large_file.txt"); // Segfaults here

The file just consists of rows of the form

number_1<tabspace>number_2

i.e., two numbers separated by a tabspace.

Answer 1

You have some other problem, because you aren't reading the file by just calling open. My guess is the file doesn't exist (or doesn't exist in the relative path you think it should exist in).