Dateien nach „BSP_1_B“ hochladen

BSP_1_B/bsp_1_b.cpp

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+#include "bsp_1_b.h"
+
+#include <cassert>
+#include <fstream>
+#include <iostream>
+#include <stdexcept>
+#include <string>
+#include <vector>
+#include <cmath>
+using namespace std;
+
+
+void meandevvec(vector<short int> x, float &a, float &g, float &h, float &d)
+{
+    a = 0;
+    for(size_t k=1; k<=x.size(); k=k+1)
+    {
+        a = a+x.at(k-1);
+    }
+    a = a/x.size();
+
+    g = 1;
+    for(size_t k=1; k<=x.size(); k=k+1)
+    {
+        g = g*pow(x.at(k-1),1.0/x.size());
+    }
+
+    h = 0;
+    for(size_t k=1; k<=x.size(); k=k+1)
+    {
+        h = h + 1.0/x.at(k-1);
+    }
+    h = x.size()/h;
+
+    d = 0;
+    for(size_t k=1; k<=x.size(); k=k+1)
+    {
+        d = d + pow(x.at(k-1)-a,2);
+    }
+    d = d/x.size();
+    d = sqrt(d);
+
+    return;
+}
+
+
+// for reading a file and writing into a txt-file
+// [Str10, p.364]
+void fill_vector(istream& istr, vector<short int>& v)
+{
+    short int d=0;
+    while ( istr >> d) v.push_back(d); // Einlesen
+    if (!istr.eof())
+    { // Fehlerbehandlung
+        cout << " Error handling \n";
+        if ( istr.bad() )  throw runtime_error("Schwerer Fehler in istr");
+        if ( istr.fail() )   // Versuch des Aufraeumens
+        {
+            cout << " Failed in reading all data.\n";
+            istr.clear();
+        }
+    }
+    v.shrink_to_fit();                 // C++11
+    return;
+}
+
+
+void read_vector_from_file(const string& file_name, vector<short int>& v)
+{
+    ifstream fin(file_name);           // Oeffne das File im ASCII-Modus
+    if( fin.is_open() )                // File gefunden:
+    {
+       v.clear();                      // Vektor leeren
+       fill_vector(fin, v);
+    }
+    else                               // File nicht gefunden:
+    {
+        cout << "\nFile " << file_name << " has not been found.\n\n" ;
+        assert( fin.is_open() && "File not found." );       // exeption handling for the poor programmer
+    }
+
+ return;
+}
+
+void write_vector_to_file(const string& file_name, const vector<float>& v)
+{
+    ofstream fout(file_name);          // Oeffne das File im ASCII-Modus
+    if( fout.is_open() )
+    {
+       for (unsigned int k=0; k<v.size(); ++k)
+       {
+          fout << v.at(k) << endl;
+       }
+    }
+    else
+    {
+        cout << "\nFile " << file_name << " has not been opened.\n\n" ;
+        assert( fout.is_open() && "File not opened."  );         // exeption handling for the poor programmer
+    }
+
+ return;
+}