/*
Random file generation 
Written by Bhaskar Bhattacharya
Copyright 2016

Code used in lecture 4
*/

#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <time.h>
using namespace std;

#define SQUARE "square"
#define RECTANGLE "rect"
#define CIRCLE "circle"

fstream fp; //Global file pointer variable can be accessed by everything after it

void write_square(){
	fp << SQUARE << " " << rand() % 100 << endl;
}
void write_rectangle(){
	fp << RECTANGLE << " " << rand() % 100 << " " << rand() % 100 << endl;
}
void write_circle(){
	fp << CIRCLE << " " << rand() % 100 << endl;
}

int main(){
	
	// Open file
	fp.open("shapes.txt", ios::out);
	
	//Make sure the file has opened
	if (!fp){
		cerr << "Oops couldn't open the file" << endl;
		return -1;
	}

	//Put the seed value
	srand(time(NULL));
	
	//Start the loop for 100 random numbers
	for (int i = 0; i < 100; i++){

		// Create a random number b/w 0 and 2 (sq, rect, circ)
		int idx = rand() % 3;

		//Switch accordingly and write
		switch (idx){
		case(0) :
			write_square();
			break;
		case(1) :
			write_rectangle();
			break;
		case(2) :
			write_circle();
			break;

		//Putting a default is good coding practice and should be used always
		default:
			break;
		}
	}

	//Close the file
	fp.close();

	//Return with 0
	return 0;
}