From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001
From: Sven Eisenhauer <sven@sven-eisenhauer.net>
Date: Fri, 10 Nov 2023 15:11:48 +0100
Subject: add new repo

---
 Bachelor/Prog1/Prakt4/prg1p4_4/main.cpp | 122 ++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 Bachelor/Prog1/Prakt4/prg1p4_4/main.cpp

(limited to 'Bachelor/Prog1/Prakt4/prg1p4_4/main.cpp')

diff --git a/Bachelor/Prog1/Prakt4/prg1p4_4/main.cpp b/Bachelor/Prog1/Prakt4/prg1p4_4/main.cpp
new file mode 100644
index 0000000..8f481ff
--- /dev/null
+++ b/Bachelor/Prog1/Prakt4/prg1p4_4/main.cpp
@@ -0,0 +1,122 @@
+// Programmieren 1, Praktikum 4, Aufgabe 4
+// Sven Eisenhauer
+// 14.12.2004
+//
+// file: main.cpp
+//
+// purpose: Simulate a Galton Board
+//
+
+#include <iostream>
+
+using std::cin;
+using std::cout;
+using std::endl;
+
+#include <iomanip>
+
+using std::setprecision;
+using std::setw;
+
+// contains function prototypes for functions srand and rand
+#include <cstdlib>
+
+#include <ctime> 
+
+const int maxBoxes=100;
+const int minBoxes=1;
+
+int fall(int &,int &);
+void getInput(int &,int &, char &);
+void textOutput(int[], const int, const int);
+void graphicalOutput(int[], const int, const int);
+
+int main()
+{
+	srand(time(0));
+
+	int nrBalls;
+	int minBox,maxBox,nrBox;
+	int box;
+	int result[maxBoxes+1]={0};
+	char outputMode;
+	
+	getInput(nrBalls,nrBox,outputMode);
+	for (int i=1;i<=nrBalls;i++)
+	{
+		minBox=minBoxes;
+		maxBox=nrBox;
+		box=fall(minBox,maxBox);
+		result[box]++;
+	}
+	if (outputMode=='t' || outputMode=='T')
+		textOutput(result,nrBalls,nrBox);
+	else
+		graphicalOutput(result,nrBalls,nrBox);
+
+	return 0;
+}// end function main
+
+void getInput(int& nrBa, int& nrBo, char &outpMode)
+{
+	cout << "Please enter number of boxes (max." << maxBoxes <<"): ";
+	cin>>nrBo;	
+	cout << "Please enter number of balls: ";
+	cin>>nrBa;
+	cout << "Please enter output mode: [T/t] table, [G/g] graphical: ";
+	cin >> outpMode;
+}// end function getInput
+
+int fall(int &minB, int &maxB)
+{
+	// if we are not over last 2 boxes
+	if((maxB-minB)>1)
+	{
+		if (0==rand()%2)
+			// ball falls to the right => we cannot reach the most left box anymore
+			minB++;
+		else
+			// ball falls to the left => we cannot reach the most right box anymore
+			maxB--;
+		fall(minB,maxB);
+		//return 0;
+	}
+	// only 2 possible boxes left... the base case 
+	else
+	{
+		if (0==rand()%2)
+			// left box
+			return minB;
+		else
+			// right box
+			return maxB;
+	}
+}
+
+void textOutput(int resArray[], const int balls,const int nrBox)
+{
+	//int sum=0;
+
+	cout << endl << setw(10) << "Box" << setw(10) << "Balls" << setw(16) << "Norm." <<endl;
+	for (int n=1;n<=nrBox;n++)
+	{
+		cout << setw(10) << n << setw(10) << resArray[n] << setw(16)<<static_cast <double>(resArray[n])/balls<<endl;
+	//	sum+=resArray[n];
+	}
+	//cout << endl << "Sum: " << sum << endl << endl;
+}// end function textOutput
+
+void graphicalOutput(int resArray[], const int balls, const int nrBox)
+{
+	const int maxColumns=75;
+
+	for (int n=1;n<=nrBox;n++)
+	{
+		cout << setw(2) << n << ": "; 
+		for (int i=0;i<static_cast <int>(((static_cast <double> (resArray[n]))/balls)*maxColumns);i++)
+			cout<<"*";
+		cout << endl;
+
+
+	}
+}// end function graphicalOutput
-- 
cgit v1.2.3