Dynamic memory allocation?

Question

Hello,

My program basically reads a binary file and stores it in an array. The program work's while the size of my array is small. But the file I am working is very large and hence the compiler just stops working due to the runtime issue.

My lead to this problem is to allocate dynamic memory to my array. But I have only seen dynamic memory being allocated to local variables. Is there a method I could apply dynamic memory to my numbers[] array itself? This could fix my problem. Any thoughts?

#include <iostream>
#include <fstream>
using namespace std;

int main()
{
int size;
fstream file;

file.open("this.bin", ios::binary | ios::in |ios::ate);
size = file.tellg();
size = size/4;
int numbers[size];
file.seekg(0, ios::beg);
file.read(reinterpret_cast<char *>(numbers), sizeof(numbers));
for(int i=0; i<size; i++){
cout << numbers[i];
}
file.close();
file.close();

return 0;
}

Answer 1

You can use std::vector<int> as a dynamic array. You can resize it as you want.