seminar 4

exercises/4/seminar/4/Matrix/Matrix.cbp

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+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_project_file>
+	<FileVersion major="1" minor="6" />
+	<Project>
+		<Option title="Matrix" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/Matrix" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Debug/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-g" />
+				</Compiler>
+			</Target>
+		</Build>
+		<Compiler>
+			<Add option="-Wall" />
+		</Compiler>
+		<Extensions>
+			<code_completion />
+			<envvars />
+			<debugger />
+			<lib_finder disable_auto="1" />
+		</Extensions>
+	</Project>
+</CodeBlocks_project_file>

exercises/4/seminar/4/Matrix/Matrix.depend

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+# depslib dependency file v1.0
+1584117413 source:c:\users\dtrz\desktop\sem3\new folder\matrix\rational.cpp
+	"ration.hpp"
+
+1584117865 c:\users\dtrz\desktop\sem3\new folder\matrix\ration.hpp
+
+1584117687 source:c:\users\dtrz\desktop\sem3\new folder\matrix\main.cpp
+	<iostream>
+	"ration.hpp"
+	"matrix.hpp"
+
+1584117920 c:\users\dtrz\desktop\sem3\new folder\matrix\matrix.hpp
+	"ration.hpp"
+
+1584117754 source:c:\users\dtrz\desktop\sem3\new folder\matrix\matrix.cpp
+	<iostream>
+	"matrix.hpp"
+

exercises/4/seminar/4/Matrix/Matrix.layout

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+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_layout_file>
+	<FileVersion major="1" minor="0" />
+	<ActiveTarget name="Debug" />
+	<File name="main.cpp" open="1" top="1" tabpos="5" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="276" topLine="0" />
+		</Cursor>
+	</File>
+	<File name="matrix.hpp" open="1" top="0" tabpos="3" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="189" topLine="0" />
+		</Cursor>
+	</File>
+	<File name="matrix.cpp" open="1" top="0" tabpos="4" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="486" topLine="17" />
+		</Cursor>
+	</File>
+	<File name="ration.hpp" open="1" top="0" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="0" topLine="0" />
+		</Cursor>
+	</File>
+	<File name="rational.cpp" open="1" top="0" tabpos="2" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="21" topLine="0" />
+		</Cursor>
+	</File>
+</CodeBlocks_layout_file>

exercises/4/seminar/4/Matrix/main.cpp

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+#include <iostream>
+#include "ration.hpp"
+#include "matrix.hpp"
+using namespace std;
+
+int main () {
+    Rational r1(5, 2), r2(1, 1);
+    Rational r3, r4;
+
+    Rational data[2][2];
+    data[0][0] = r1;
+    data[0][1] = r2;
+    data[1][0] = r3;
+    data[1][1] = r4;
+
+    Matrix m1(data, 2, 2);
+
+    cout<< r3.getA()<< " "<< r3.getB()<< endl;
+
+    return 0;
+}

exercises/4/seminar/4/Matrix/matrix.cpp

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+#include <iostream>
+#include "matrix.hpp"
+
+
+void Matrix::clearData() {
+    for(int i = 0; i< N; ++i) {
+        delete [] data[i];
+    }
+    delete [] data;
+}
+
+void Matrix::copyData(const Matrix& m) {
+    data = new Rational*[N];
+    for(int i = 0; i< m.N; ++i) {
+        data[i] = new Rational[m.M];
+    }
+
+    for(int i = 0; i< m.N; ++i) {
+        for(int j = 0; j< m.M; ++j) {
+            data[i][j] = m.data[i][j];
+        }
+    }
+}
+
+Matrix::Matrix(Rational** data, int N, int M): data(NULL), N(N), M(M) {
+    if(data == NULL) {
+        return;
+    }
+
+    this->data = new Rational*[N];
+    for(int i = 0; i< N; ++i) {
+        this->data[i] = new Rational[M];
+    }
+
+    for(int i = 0; i< N; ++i) {
+        for(int j = 0; j< M; ++j) {
+            this->data[i][j] = data[i][j];
+        }
+    }
+}
+
+Matrix::Matrix(const Matrix& m) {
+    copyData();
+}
+
+Matrix::Matrix& operator=(const Matrix& m) {
+    if(this == &m) {
+        return *this;
+    }
+    clearData();
+    copyData(m);
+    return *this;
+}
+
+Matrix::~Matrix() {
+    for(int i = 0; i< N; ++i) {
+        delete [] data[i];
+    }
+    delete [] data;
+}

exercises/4/seminar/4/Matrix/matrix.hpp

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+#include <iostream>
+#include "ration.hpp"
+#ifndef MATRIX
+#define MATRIX
+
+class Matrix {
+    int N, M;
+    Rational** data;
+
+    void clearData();
+    void copyData(const Matrix& m);
+
+public:
+    Matrix(Rational** data = NULL, int N = 0, int M = 0);
+    Matrix(const Matrix& m);
+    Matrix& operator=(const Matrix& m);
+    ~Matrix();
+};
+
+#endif

exercises/4/seminar/4/Matrix/ration.hpp

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+#ifndef RATIONAL
+#define RATIONAL
+
+class Rational {
+    int a;
+    int b;
+
+public:
+
+    int getA() const;
+    int getB() const;
+
+    Rational(int c = 0, int d = 1);
+};
+
+#endif

exercises/4/seminar/4/Matrix/rational.cpp

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+#include "ration.hpp"
+
+int Rational::getA() const {
+    return a;
+}
+
+int Rational::getB() const {
+    return b;
+}
+
+Rational::Rational(int c, int d) {
+    a = c;
+    if(b == 0) {
+        b = 1;
+    } else {
+        b = d;
+    }
+}

exercises/4/seminar/4/string.cpp

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+#include <iostream>
+#include <cassert>
+using namespace std;
+
+int strlen(const char* str) {
+    int i = 0;
+    for(; str[i] != '\0'; ++i);
+    return i;
+}
+
+void strcpy(char* destination, const char* source) {
+    int i = 0;
+    for(; source[i] != '\0'; ++i) {
+        destination[i] = source[i];
+    }
+    destination[i] = '\0';
+}
+
+// strlen, strcpy, strcat
+class String {
+
+private:
+    char* data;
+    int length;
+
+    void copyData(const String& str) {
+        length = str.length;
+        this->data = new char[length + 1];
+        strcpy(this->data, str.data);
+    }
+
+    void clearData() {
+        delete [] data;
+    }
+
+public:
+    // resource aquisition is initialization
+    String(const char* data = ""): data(NULL), length(0) {
+        length = strlen(data);
+        this->data = new char[length + 1];
+        strcpy(this->data, data);
+    }
+
+    String(const String& str) {
+        copyData(str);
+    }
+
+    String& operator=(const String& str) {
+        if(this == &str) {
+            return *this;
+        }
+        clearData();
+        copyData(str);
+
+        return *this;
+    }
+
+    ~String() {
+        clearData();
+    }
+
+    void strcat(const String& str) {
+        char* newData = new char[length + str.length + 1];
+        for(int i = 0; data[i] != '\0'; ++i) {
+            newData[i] = data[i];
+        }
+        cout<< length<< endl;
+        for(int i = 0; str.data[i] != '\0'; ++i) {
+            newData[i + length] = str.data[i];
+        }
+        newData[length + str.length] = '\0';
+
+        delete [] data;
+
+        data = newData;
+        length = length + str.length;
+    }
+
+    static String strcat(const String& s1, const String& s2) {
+        String result;
+        result.strcat(s1);
+        result.strcat(s2);
+        return result;
+    }
+
+    int getLength() const {
+        return length;
+    }
+
+    const char* getData() const {
+        return data;
+    }
+};
+
+int main () {
+    String s1("str1"), s2("str2");
+
+    s1.strcat(s2);
+    cout<< s1.getData()<< endl;
+
+    String s3 = String::strcat(s1, s2);
+    cout<< s3.getData()<< endl;
+
+    return 0;
+}

exercises/4/seminar/4/stringBuild.cpp

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+#include <iostream>
+using namespace std;
+
+int strlen(const char* str) {
+    int i = 0;
+    for(; str[i] != '\0'; ++i);
+    return i;
+}
+
+void strcpy(char* destination, const char* source) {
+    int i = 0;
+    for(; source[i] != '\0'; ++i) {
+        destination[i] = source[i];
+    }
+    destination[i] = '\0';
+}
+
+class String {
+    char* data;
+    int length;
+
+public:
+    String(const char* data) {}
+    String(const String& str) = delete;
+    String& operator=(const String& str) = delete;
+    ~String() {}
+};
+
+int main () {
+
+    String s1("str1"), s2("str2");
+
+    cout<< s1.getData()<< " "<< s2.getData()<< endl;
+
+    return 0;
+}

exercises/4/seminar/4/test.cpp

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+#include <iostream>
+using namespace std;
+
+int main() {
+    char* arr = new char[10];
+    for(int i = 0; i< 9; ++i) {
+        arr[i] = 'a' + i;
+    }
+    arr[9] = '\0';
+    cout<< arr<< endl;
+    if(true) {
+        char* arr2 = arr;
+        delete [] arr2;
+    }
+    cout<< arr<< endl;
+
+    return 0;
+}