Reading files in C - Day 3

readfile.c

#include <stdio.h>

//Stores line
char row[4];

void main()
{

// File variable to open file
	FILE *file_pointer = fopen("2columns.txt", "r");

// Reads file line by line
	while(fgets(row, sizeof(row), file_pointer) != NULL)
	{
		printf("%s", row);
	}

	fclose(file_pointer);
}