Thread: lottery program mega million

hi guys .
im new to c++
im actually working on a simulation to the mega million lottery.
but i have a problem matching the user's number and the lottery number (random number).

that my program :

Code:

#include <iostream>
#include<iomanip>
#include <ctime>
#include<string>
#include<fstream>
using namespace std;
void winningnum();
void userchoice();
void getexit();
int play, draw;
const int size = 5;
const int size2 = 1;
int MBnumber[size2];
int lottery[size];
int user[size];
int jackpot= 300000;
bool sendback=true;
bool searchmyarray(int userval , int indexval);
bool SearchLottreMyyArray(int userValue,int indexValue);
void mactchingnumbers();

int main (){
	char again;

	do{
		userchoice();
		winningnum();
		mactchingnumbers();



		cout <<"\n would you like to play again :";
		cin >> again;

	} while( again == 'y' || again == 'Y' );
	getexit();
	return 0;

}
}
void userchoice(){

	cout <<"how many play , would you like to play(choose from 1 to 3 ): " ;
	cin >> play;
	while (play >3 || play < 1){
		cout <<"\nentry not valid , please choose a numbe in the range of 1 to 3: ";
		cin >> play;
	}

	cout <<"\nhow many draws would you like to play "
		"\nfor you picks(choose from day 1 to day 7 ) :";
	cin>> draw;
	while ( draw > 7 || draw < 1 ){
		cout<<"\nplease choose a number from 1 to 7 :" ;
		cin >> draw;
	}
	cout <<"\ngood luck , so you are going to play with "<<play<<"  group of number for "<<draw<<"  days"<<endl;
	cout <<"Enter you 5 picks in the range of 1 to 56"<<endl;

	ifstream inputfile;
	inputfile.open("usersnumbers.txt");
	for (int k =0 ;k < play; k++){
		cout <<"Numbers for play number "<<k+1<<" :";
		for(int i =0 ;i <size; i++){
			//cout<<"Number " << i+1 << " : ";
			//cin >>user[i];
			inputfile>>user[i];
			cout<<"["<<user[i]<<"]";
			while(sendback){
				while (user[i]> 56 || user[i]< 1){
					cout<<"please choose a number in the range of 1 to 56 :";
					cin>>user[i];
					cin.ignore();
					cin.clear();
				}
				if(user[i] != 0 )
					sendback= searchmyarray(user[i],i);
				else 
					sendback= false;
			}sendback = true;

			//cout<<endl;
		}		
		cout <<"\nMegaBall Number for play "<<k+1<<" : ";
		for(int j = 0; j < size2 ;  j++){
			//cin>> MBnumber[j];
			inputfile>>MBnumber[j];
			cout<<"["<<MBnumber[j]<<"]"<<endl;
			while ( MBnumber[j] > 46 || MBnumber[j] < 1){
				cout <<"\nplease choose a number in the range of 1 to 46 : ";
				cin>>MBnumber[j];
			}
			cout<<endl;			
		}
	}
	inputfile.close();
}
void winningnum(){

	srand(time(0));

	cout <<"\n And the winning numbers are :\t"<<endl;
	ifstream file;
	file.open("randomnumber.txt");
	for (int k =0 ;k <draw; k++){
		cout<<"\nNumbers for play number "<<k+1<<" : ";
		for(int w =0 ;w <size; w++){
			while(sendback){
				if(lottery[w]!=0){
					sendback= SearchLottreMyyArray(lottery[w],w);
				}
				else {
					sendback= false;
				}
			}sendback = true;

			//int num2= rand () % 56 + 1;
			//lottery[w] = num2;
			//cout <<"["<< num2 <<"]";
			file>>lottery[w];
			cout<<"["<<lottery[w]<<"]";
		}		
		cout <<endl;
		cout <<"The megaball number : \t";

		for(int j = 0; j < size2 ;  j++){
			//lottery[j] =  1+ rand () % 46;
			//cout <<"["<<lottery[j]<<"]";
			file>>lottery[j];
			cout<<"["<<lottery[j]<<"]";
		}
		cout<<endl;
	}
	file.close();
}
bool searchmyarray(int x,int y){
	bool status= true;
	for(int i =0 ; i < y ; i++)

		if(x ==  user[i]){
			cout<<"\n you choose a duplicate number, choose another one.";
			cin>> user[i];
			status= false;
		}
		else {
			status = false;
		}
		status=false;

		return status;
}
bool SearchLottreMyyArray(int x,int y){

	bool status= true;
	for(int w =0 ; w < y ; w++){
		//	int num1 = rand () %  56 +1 ;
		if(x ==  lottery[w]) {
			cout <<"["<< lottery[w] <<"]";
			status = false;
		}
		else {
			status = false;
		}
	}
	status=false;

	return status;
}
void mactchingnumbers(){
	int NumMatch = 0 ;
	int MBmatch=0;
	cout <<"\nRESULT : "<<endl;
	for(int  p = 0 ; p < play ; p++ ){	
		cout <<"Play #"<<p+1<<" Winnings :  ";
		for(int  d=0 ; d<draw ; d++ ){
			cout<<"Draw # "<< d+1<<" " <<endl;


			for(int i =0; i <size; i++){
				//int temp = user[i];
				for(int w =0 ; w<size;w++){
					if (user[i] == lottery[w]){
						cout<<user[i]<<endl;
						NumMatch++;

					}
				}
			}
			cout<<"you have " <<NumMatch<<" out of five ";
			cout<<endl;}


	}
}

if you can help me to find the function that will allow me to macth the user number and lottery number (for each play and draw .)

thank you.

actually i dont konw how to use it
because i tried many things and still didnt work

What is the point of the return value of SearchLottreMyyArray? It always returns false. Are you expecting it to somehow return true? (On the other hand, you seem to not really be using it, so oh well.)

You overwrite the first number drawn by the lottery with the MB number, so that data is lost. There's nothing wrong with the way you check for matching numbers.

hello tabstop.
thank you for your answer.
actually i have a problem with the matching function
because the goal is to match user array and the lottery array for each play(1 to 3) and for each draw (1 to 7).
so when i run the program and enter like 1 play and 1 draw , the matching is correct, but when i put more than one play or draw everything gets messed up.


thank you.

Nowhere in your code do you get more than one day's worth of numbers. Putting in a loop for d going from 0 to draw is nice, but if you don't get new numbers inside that loop it doesn't help.