#include <stdio.h>
int main()
{
	FILE *file_ptr; // 1. declare a file pointer
	file_ptr = fopen("data.txt", "w"); // 2. create a file

	if(file_ptr !=NULL) // 3. test
	{
		printf("File created\n");
		fclose(file_ptr); // 4. close the file
		return 0;
	}
	else{printf("Unable to create file.\n"); return 1; }
}